Hallwyl Museum in Stockholm

You're standing on Hamngatan, at number 4, with the green of Berzelii Park behind you. That grand house in front of you is Hallwyl House, now a Swedish national museum. Take a good look at the façade. Architect Isak Gustaf Clason borrowed ideas from medieval buildings and from Renaissance Venice. It looks centuries old, but it was only built between 1893 and 1898.