On June 6, 1944, more than 160,000 Allied troops landed along a 50-mile stretch of heavily-fortified French coastline, to fight Nazi Germany on the beaches of Normandy, France.
National monuments are located in 31 states as well as in the District of Columbia, the Virgin Islands, American Samoa, the Minor Outlying Islands, and the Northern Mariana Islands. Arizona, with 18, has the largest number of national monuments, followed by California with 15 and New Mexico with 14. At least 65 national monuments protect places of natural significance, including 12 geological sites, seven marine sites, and five volcanic sites.
From left to right, top to bottom: Chichen Itza, Christ the Redeemer, Great Wall of China, Machu Picchu, Petra, Taj Mahal, and Colosseum. New7Wonders of the World (2000â2007) was an initiative started in 2000 as a Millennium project to choose Wonders of the World from a selection of 200 existing monuments.