Mont St. Michel, Normandy, France - Site of a Benedictine Abbey, tidal island, population 41 - 3 million visitors yearly
Leaning Tower of Pisa
Paris, France - Seine River - Eiffel Tower
The Colosseum, Rome, Italy - I think I see Audrey Hepburn and Gregory Peck circling the building on a Vespa.
King Ludwig's Neuschwanstein castle - Bavaria, Germany
Taken by the Air National Guard while stationed in Europe 1961-1962, during the Berlin Wall build-up. Found in a box that belonged to my uncle. His job was developing aerial reconnaissance photographs. I'm not sure how he came to have the photos, but suspect he developed anything of a non-sensitive nature that he liked and kept a copy.