The Cathedral Notre Dame in Paris, one of the first majestic building in French Gothic style built in the 12/13th century.
Arc de Triumphe is one of the defining monuments of Paris, France. It honours the soldiers who fought for France, including 660 names of all the generals and wars faught. The floor of the moument contains the tomb of the unknown soldier from World War I.
The Eiffel Tower, one of the most photographed sights in the world and used in several love stories, you can walk up the stairs or use the lift :)
The Louvre, in Paris, France, is one of the world's most visited art museums, an historic monument, and a national symbol. The collection contains nearly 35,000 pieces displayed over the structure's 60,000 square meters (650,000 sq ft).