13 National Monuments (let's try not to do all U.S. ones! )

1. Nederlands Nationaal Monument
2. Stonehenge
3. National Museum of Singapore
4. Brecon Beacons National Park
5. Grand Canyon-Parashant National Monument
6. Old Ford Motor Factory (site where Singapore Surrendered To Japan During the second world war. i should know, i was a tour guide there once )