Gothic architecture.
The Waag is a 15th-century building on Nieuwmarkt square in Amsterdam. It was originally a city gate and part of the walls of Amsterdam. Later it served as a guildhall, museum, fire station and anatomical theatre, among other things.
From Wikipedia, CC BY-SA 4.0.
Stand in front of it, point your camera, and LookUp names it from where you are, with these facts on the card. Every landmark you capture turns to colour on your Amsterdam map.
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