5: Sacré Coeur, Paris, France
Visitors per year: 10.5 Million
The Basilica of the Sacred Heart of Paris, commonly known as Sacré-Cœur Basilica and often simply Sacré-Cœur is a Roman Catholic church and minor basilica.
The Sacré-Cœur Basilica was designed by Paul Abadie. Construction began in 1875 and was finished in 1914.