Explore the top 20 churches around the world, from Gaudi's Sagrada Familia to Saint Peter's Basilica

Saint Peter's Basilica is built over the traditional burial site of Saint Peter , one of Jesus 's apostles.

Notre Dame de Paris is one of the most famous cathedrals in the world and a prime example of French Gothic architecture.

Hagia Sophia has stood in Istanbul for nearly 1500 years , witnessing the rise and fall of empires.

Milan Cathedral , also known as the Duomo de Milano , is one of Europe 's largest Gothic cathedrals.

Westminster Abbey is a famous Gothic church in London with roots stretching back to the 10th century .

Saint Mark's Basilica in Venice is a jewel of Byzantine inspired architecture.

Cologne Cathedral is a UNESCO World Heritage Site and a centre of religious life.

Sacrecur was built in 1875 under architect Paula Bardi , but the basilica was not completed until 1914 .

Built after the Franco Prussian War , it's white domes were meant to be a symbol of hope and reconciliation.

The gleaming travertine stone walls release calcite over time, helping the Basilica maintain its bright appearance.