diff --git a/src/components/map-tile-provider/MapTileProvider.module.css b/src/components/map-tile-provider/MapTileProvider.module.css
index 41b200c..6ad2e36 100644
--- a/src/components/map-tile-provider/MapTileProvider.module.css
+++ b/src/components/map-tile-provider/MapTileProvider.module.css
@@ -5,22 +5,3 @@
   margin-left: calc(100% - 70px) !important;
   z-index: 1;
 }
-
-.title {
-  background-color: rgba(14, 116, 144, 0.7);
-  color: white;
-  clear: both;
-}
-
-.title-text {
-  float: left;
-}
-
-.close {
-  float: right;
-}
-
-.body {
-  padding: 20px;
-  background-color: rgba(255, 255, 255, 0.7);
-}
diff --git a/src/components/map-tile-provider/MapTileProvider.tsx b/src/components/map-tile-provider/MapTileProvider.tsx
index a2d9bc2..5c4f6f0 100644
--- a/src/components/map-tile-provider/MapTileProvider.tsx
+++ b/src/components/map-tile-provider/MapTileProvider.tsx
@@ -1,6 +1,6 @@
 import OSM from 'ol/source/OSM';
 import XYZ from 'ol/source/XYZ';
-import { Component, createSignal, For } from 'solid-js';
+import { Component, createEffect, createSignal, For, Show } from 'solid-js';
 import {
   I18nContext,
   createI18nContext,
@@ -11,14 +11,19 @@ import style from './MapTileProvider.module.css';
 import LayersIcon from '@suid/icons-material/Layers';
 import CloseIcon from '@suid/icons-material/Close';
 import {
-  Dialog,
-  DialogTitle,
   FormControlLabel,
   IconButton,
   Radio,
   RadioGroup,
 } from '@suid/material';
 import { useNavigate, useParams } from '@solidjs/router';
+import Dialog from '../dialog';
+import Tree from '../tree';
+import { createCachedSignal } from '../../workers/cached-signals';
+import dispatch from '../../workers/dispatcher-main';
+import getUri from '../../lib/ids';
+
+const id = getUri('overlays', undefined);
 
 interface TileProvider {
   name: string;
@@ -93,6 +98,91 @@ export const mapTileProviders: TileProviders = {
   },
 };
 
+type FeatureSubTypes = Array<string> | '*';
+type FeatureTypes = Record<string, FeatureSubTypes>;
+type Overlay = {
+  selected: boolean;
+  highlighted: FeatureTypes;
+  hidden: FeatureTypes;
+};
+type Overlays = Record<string, Overlay>;
+
+const defaultOverlays: Overlays = {
+  none: { selected: true, highlighted: { none: [] }, hidden: {} },
+  hiking: {
+    selected: false,
+    highlighted: {
+      none: [],
+    },
+    hidden: { none: [] },
+  },
+};
+
+type OverlayDefinition = Record<string, FeatureTypes>;
+type OverlayDefinitions = Record<string, OverlayDefinition>;
+
+export const overlayDefinitions: OverlayDefinitions = {
+  none: {},
+  hiking: {
+    none: {},
+    sleeping: {
+      tourism: '*',
+    },
+    drinking: {
+      amenity: ['bar', 'cafe', 'pub', 'drinking_water', 'water_point'],
+    },
+    eating: {
+      amenity: ['fast_food', 'pub', 'restaurant'],
+      shop: [
+        'bakery',
+        'butcher',
+        'cheese',
+        'chocolate',
+        'convenience',
+        'dairy',
+        'farm',
+        'greengrocer',
+        'health_food',
+        'pastry',
+        'seafood',
+        'department_store',
+        'supermarket',
+      ],
+    },
+    health: {
+      amenity: ['doctors', 'hospital', 'pharmacy'],
+    },
+    security: {
+      amenity: ['police', 'fire_station'],
+    },
+    dayToDay: {
+      amenity: ['waste_basket', 'waste_disposal'],
+      shop: ['laundry'],
+    },
+  },
+};
+
+const getOverlays = createCachedSignal({
+  id,
+  method: 'getOverlays',
+  defaultOverlays,
+}) as () => Overlays;
+
+const currentOverlayKey = () =>
+  getOverlays()
+    ? Object.keys(getOverlays()).filter((key) => getOverlays()[key].selected)[0]
+    : 'none';
+
+const currentOverlay = () =>
+  getOverlays() ? getOverlays()[currentOverlayKey()] : {};
+
+const currentOverlayDefinition = () => overlayDefinitions[currentOverlayKey()];
+
+const currentOverlayHighlightedKey = () =>
+  currentOverlay() && currentOverlay().highlighted
+    ? Object.keys(currentOverlay().highlighted)[0]
+    : 'none';
+
 const MapTilesProvider: Component<{}> = (props) => {
   const [open, setOpen] = createSignal(false);
 
@@ -116,6 +206,50 @@ const MapTilesProvider: Component<{}> = (props) => {
     setOpen(false);
   };
 
+  createEffect(() => {
+    console.log({
+      caller: 'MapTilesProvider',
+      overlays: getOverlays(),
+      currentOverlayKey: currentOverlayKey(),
+      currentOverlay: currentOverlay(),
+      currentOverlayDefinition: currentOverlayDefinition(),
+      currentOverlayHighlightedKey: currentOverlayHighlightedKey(),
+    });
+  });
+
+  const handleOverlayChange = (ev: any) => {
+    const value = ev.target.value;
+    console.log({
+      caller: 'MapTilesProvider / handleOverlayChange',
+      ev,
+      value,
+    });
+    const newOverlays = getOverlays();
+    Object.keys(newOverlays).forEach((key) => {
+      newOverlays[key].selected = key === value;
+    });
+    dispatch({
+      action: 'putOverlays',
+      params: { id, overlays: newOverlays },
+    });
+  };
+
+  const handleOverlayHighlightChange = (ev: any) => {
+    const value = ev.target.value;
+    console.log({
+      caller: 'MapTilesProvider / handleOverlayHighlightChange',
+      ev,
+      value,
+    });
+    const newOverlays = getOverlays();
+    newOverlays[currentOverlayKey()].highlighted = {};
+    newOverlays[currentOverlayKey()].highlighted[value] = [];
+    dispatch({
+      action: 'putOverlays',
+      params: { id, overlays: newOverlays },
+    });
+  };
+
   return (
     <>
       <div class={style.control}>
@@ -123,28 +257,66 @@ const MapTilesProvider: Component<{}> = (props) => {
           <LayersIcon />
         </IconButton>
       </div>
-      <Dialog onClose={handleClose} open={open()} class={style.dialog}>
-        <DialogTitle class={style.title}>
-          <div class={style['title-text']}>{t('chooseYourMap')}</div>
-          <IconButton onClick={handleClose} class={style.close}>
-            <CloseIcon />
-          </IconButton>
-        </DialogTitle>
-        <RadioGroup
-          defaultValue={params.provider}
-          class={style.body}
-          onChange={handleChange}
-        >
-          <For each={Object.keys(mapTileProviders)}>
-            {(p: string) => (
-              <FormControlLabel
-                value={p}
-                control={<Radio />}
-                label={mapTileProviders[p].name}
-              />
-            )}
-          </For>
-        </RadioGroup>
+      <Dialog
+        closeHandler={handleClose}
+        open={open()}
+        title={t('chooseYourMap')}
+      >
+        <Tree
+          title={t('overlay')}
+          content={
+            <>
+              <RadioGroup
+                defaultValue={currentOverlayKey()}
+                onChange={handleOverlayChange}
+              >
+                <For each={Object.keys(overlayDefinitions)}>
+                  {(p: string) => (
+                    <FormControlLabel value={p} control={<Radio />} label={p} />
+                  )}
+                </For>
+              </RadioGroup>
+              <Show when={Object.keys(currentOverlayDefinition()).length > 0}>
+                {' '}
+                <div>---</div>
+                <div>Highlight</div>
+                <RadioGroup
+                  defaultValue={currentOverlayHighlightedKey()}
+                  onChange={handleOverlayHighlightChange}
+                >
+                  <For each={Object.keys(currentOverlayDefinition())}>
+                    {(p: string) => (
+                      <FormControlLabel
+                        value={p}
+                        control={<Radio />}
+                        label={p}
+                      />
+                    )}
+                  </For>
+                </RadioGroup>
+              </Show>
+            </>
+          }
+          subTree={undefined}
+        ></Tree>
+
+        <Tree
+          title={t('baseLayer')}
+          content={
+            <RadioGroup defaultValue={params.provider} onChange={handleChange}>
+              <For each={Object.keys(mapTileProviders)}>
+                {(p: string) => (
+                  <FormControlLabel
+                    value={p}
+                    control={<Radio />}
+                    label={mapTileProviders[p].name}
+                  />
+                )}
+              </For>
+            </RadioGroup>
+          }
+          subTree={undefined}
+        ></Tree>
       </Dialog>
     </>
   );
diff --git a/src/db/change-handler.ts b/src/db/change-handler.ts
index 75018de..af0c834 100644
--- a/src/db/change-handler.ts
+++ b/src/db/change-handler.ts
@@ -3,6 +3,7 @@ import { getWpt } from '../db/wpt';
 import { returnAgain } from '../workers/dispatcher-worker';
 import { getAllGpxes, getGpx } from './gpx';
 import { put } from './lib';
+import { getOverlays } from './overlays';
 import { getRte } from './rte';
 import { getTrk } from './trk';
 import { getTrkseg } from './trkseg';
@@ -18,6 +19,7 @@ const methods = {
   getTrkseg,
   getWpt,
   getRte,
+  getOverlays,
 };
 
 const sendUpdate = async (params: any) => {
@@ -79,7 +81,9 @@ const changeHandler = async (change: any) => {
   }
 
   const parentParams = globalThis.watches.get(parentId);
-  debouncedSendUpdates[parentParams.method](parentParams);
+  if (parentParams) {
+    debouncedSendUpdates[parentParams.method](parentParams);
+  }
 };
 
 export default changeHandler;
diff --git a/src/db/index.ts b/src/db/index.ts
index e713ea3..b656d86 100644
--- a/src/db/index.ts
+++ b/src/db/index.ts
@@ -136,6 +136,16 @@ export const initDb = async (params: any) => {
       console.log({ caller: 'changes / complete', error });
     });
 
+  const localDbChanges = localDb
+    .changes({ since: 'now', live: true, include_docs: false })
+    .on('change', changeHandler)
+    .on('complete', (info: any) => {
+      console.log({ caller: 'localDb changes / complete', info });
+    })
+    .on('error', (error: any) => {
+      console.log({ caller: 'localDb changes / complete', error });
+    });
+
   // console.log({ caller: 'initDb / back from db.changes', changes });
 
   //  changes.cancel();
diff --git a/src/db/overlays.ts b/src/db/overlays.ts
new file mode 100644
index 0000000..d6ce104
--- /dev/null
+++ b/src/db/overlays.ts
@@ -0,0 +1,18 @@
+import { get, put } from './lib';
+
+export const getOverlays = async (params: any) => {
+  const { id, defaultOverlays } = params;
+  try {
+    const overlays = await get(id, true);
+    return overlays.doc;
+  } catch (error: any) {
+    console.error({ caller: 'getOverlays', error });
+    return defaultOverlays;
+  }
+};
+
+export const putOverlays = async (params: any) => {
+  const { id, overlays } = params;
+  await put(id, 'overlays', (doc) => overlays, {}, true);
+  return overlays;
+};
diff --git a/src/i18n/en.ts b/src/i18n/en.ts
index 7ae5fca..d866bc2 100644
--- a/src/i18n/en.ts
+++ b/src/i18n/en.ts
@@ -2,6 +2,9 @@ const dict = {
   close: 'close',
 
   chooseYourMap: 'Choose your map',
+  baseLayer: 'Base layer',
+  overlay: 'Overlay',
+  hiking: 'Hiking',
 
   nearby: 'Nearby',
 
diff --git a/src/i18n/fr.ts b/src/i18n/fr.ts
index 7fce833..0a46935 100644
--- a/src/i18n/fr.ts
+++ b/src/i18n/fr.ts
@@ -4,6 +4,9 @@ const dict = {
   close: 'quitter',
 
   chooseYourMap: 'Choisissez votre carte',
+  baseLayer: 'Fond de carte',
+  overlay: 'Sur couche',
+  hiking: 'Randonnée',
 
   nearby: 'À proximité',
 
diff --git a/src/lib/ids.ts b/src/lib/ids.ts
index c32ce27..311ef8f 100644
--- a/src/lib/ids.ts
+++ b/src/lib/ids.ts
@@ -27,6 +27,7 @@ const coding = {
 const routes = {
   dbdef: route('dbdef', coding),
   state: route('state', coding),
+  overlays: route('overlays', coding),
   account: route('account/:account', coding),
   settings: route('settings', coding),
   gpx: route('gpx/:gpx', coding),
diff --git a/src/workers/dispatcher-worker.ts b/src/workers/dispatcher-worker.ts
index 2ebc0bf..73b1104 100644
--- a/src/workers/dispatcher-worker.ts
+++ b/src/workers/dispatcher-worker.ts
@@ -12,6 +12,7 @@ import {
   getAllGpxes,
   getAllGpxesWithSummary,
 } from '../db/gpx';
+import { putOverlays } from '../db/overlays';
 import { putRte } from '../db/rte';
 import { putRtept } from '../db/rtept';
 import { getSettings, putSettings } from '../db/settings';
@@ -59,6 +60,8 @@ onmessage = async function (e) {
     getState,
     setState,
 
+    putOverlays,
+
     getAndWatch,
     cancelWatch,