Museum of Estonian Architecture in Tallinn

You're standing at the Museum of Estonian Architecture, in Tallinn's Rotermann quarter. First, take a good look at the building itself. This is an old salt warehouse, built in 1908. It was designed by Ernst Boustedt, a Baltic-German engineer. Beneath it lies an arched cellar, and that's where the salt used to be stored. An architecture museum inside a piece of industrial architecture: it just makes sense.