In 1917, New York's Union Square held USS Recruit, a full-scale wooden land battleship used as a Navy recruiting station during World War I.

After tripping over an unusual stone in 1879, rural postman Ferdinand Cheval spent 33 years collecting stones on his rounds and building the Palais Idéal in his garden.

Reginald Bray tested British postal regulations by sending unusual objects through the mail—including, with the help of a friend, himself as a human letter.