#1 The Popeye Papyrus.
#2 Physics laws that (consistently) don't work. They just determine future failure. God is a lug-bolt the end.
#3 Unexplained structures, perhaps created by aliens, like the Eiffel Tower.
#4 Unexplained and doubly-unexplained construction methods, like how to lift the beams for the Eiffel Tower before perpetual motion machines?
#5 Inconsistency. Why was there (perhaps?) little known archeological evidence at the site of the Grand Kalifa?
International Society for the Philosophy of Architecture » Ethics and Aesthetics of Architecture and the Environment