Hagia Sophia
Built in 537 CE, it was the largest enclosed space humanity had ever constructed. The architects Anthemius and Isidore had no CAD software — they derived the dome's pendentives using geometry they invented on the spot.
Open the app, tap once, walk. A story finds you. Ask the guide anything. No itinerary, no route to plan.

Open Waymark, grant location, and tap Start exploring. The guide watches where you go and surfaces what's hiding underfoot.

Walk past a place — a 30-second story slides up. Verified facts grounded in OpenStreetMap and Wikidata, written like a friend with great taste.

Tap a story to open a real conversation. The guide knows the place inside out and remembers what made you curious. Five free questions per place.
Every card is grounded in OpenStreetMap and Wikidata, then written like a friend with great taste — distilled to the one thing worth knowing.
Built in 537 CE, it was the largest enclosed space humanity had ever constructed. The architects Anthemius and Isidore had no CAD software — they derived the dome's pendentives using geometry they invented on the spot.
The design was chosen through a competition in 1730. The winning architect embedded a small barber's shop in the facade — purely to spite a critic who had complained about blocking his view from a nearby building.
Commissioned by a district governor whose name history never recorded. The inscription above the spout reads: "May every passerby drink and remember that someone, once, cared."
No fixed route. No tour to start. No audio queued in advance. Walk any street — your new city, your old neighbourhood, the back alleys you never noticed — and Waymark surfaces the place beneath your feet.
Walk within range of a historically significant place and a card slides up — automatically. No tapping, no searching, no planning ahead. Just walk.
Powered by OpenStreetMap and Wikidata — the world's largest open knowledge graph. Millions of places covered globally, from famous landmarks to forgotten corners only locals know.
Tap “Tell me more” to open a real conversation about the place. Ask about the engineering, the history, who built it — no question is too specific.
Tap the pin counter to browse every place you've discovered this session — the name, distance, and story snippet for each one. A living log that writes itself as you walk.
No routes to follow, no audio droning in your ear. Waymark runs silently while you explore wherever your feet take you.
When you're within range of a place worth knowing about, a card slides up — a short, friendly story, generated for that exact place.
Swipe it away and keep walking. Or tap “Tell me more” and have a real conversation about what you're standing next to.
No trial, no credit card to start. Walk, discover, decide.