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?
What building, erected at Sydenham near London in 1852-54 in 200 acres of grounds and given to the public in 1920, was gutted by fire in 1936 and finally demolished in 1941?
At the official opening ceremony of which building, on 29 March 1871, did the Prince of Wales take the place of the Queen to declare it open?
