What type of building is famous in Milan, Venice, Florence, Seville, Paris, Chartres, Amiens, Rheims, Cologne, Mainz and Trèves?
Which building on the Île de la Cité in Paris took 300 years to build from 1163, and was one of the first to have flying buttresses?
The hammerbeam roof, a mediaeval type of stepped wooden architecture designed for spanning wide spaces, is a feature of which ancient English building?
What medieval coin, first minted around 1140 by Roger II of Sicily, was adopted by Florence in 1252 and Venice in 1283, and was in use in Austria-Hungary until 1914?
What is the meaning of the name of the great building in Istanbul, built in the early 6th century as a Christian church, subsequently becoming a Muslim mosque, a secular museum and a Muslim mosque again?
