No one knows exactly what the Mausoleum at Halicarnassus looked like when it was intact. It was one of the Seven Wonders of the World, but today all that is left is a bit of rubble. The rough outlines are generally known, however, and the speculative reconstructions of it have been productive of more monumental architecture in Pittsburgh than perhaps any other classical building. At least half a dozen buildings in Pittsburgh were inspired by it: Soldiers & Sailors Hall, the Hall of Architecture at the Carnegie, Presbyterian Hospital, Allegheny General Hospital, the Gulf Building, and the Wilkins mausoleum in the Homewood Cemetery. Above is James Fergusson’s version of how it must have looked, and Fergusson’s was one of the most influential reconstructions. See if you can spot the resemblance with the Soldiers and Sailors Memorial by Henry Hornbostel: