During the Civil War, a man gained national recognition by repeatedly auctioning off a plain sack of flour. By doing so, he raised $250,000 which aided wounded soldiers.
During the 18th century, you could pay your admission to the zoo in London by bringing a cat or a dog to feed the lions.
Built in the 18th-century, the Royal Eise Eisinga Planetarium is the oldest still working planetarium in the world
The Bodleian Library: Regarded as a masterpiece of English Gothic architecture and one of the oldest libraries in Europe
“Sweetheart Grips” – WWII soldiers would make clear grips for their pistols to display their sweethearts
The historic bridge of Plaka in Arta: The largest single-arch bridge in the Balkans that stood for 148 years