St. Mark’s Basilica, Venice, Italy: Built in pale marble from Syria, Egypt, and Palestine, San Marco is a fine example of Italo-Byzantine architecture
Church of the Holy Sepulchre, Jerusalem, Israel: The air is always heavy with incense and chanting, as there’s invariably a service taking place
Valencia Cathedral, Valencia, Spain: The cathedral itself is a magnificent confection of Baroque, Gothic, and Romanesque styles, with some priceless artwork
La Seu, Palma de Mallorca, Spain: The cathedral was built in the 14th century and is one of the tallest gothic structures in Europe
Notre-Dame de Paris, Paris, France: one of the most beautiful churches in the world is well underway as the roof and spire are currently rebuilt
Duomo Santa Maria del Fiore, Florence, Italy: Inside, the cathedral is relatively simple but take a few moments to appreciate the beautiful mosaic floors, best viewed from above
La Sagrada Familia, Barcelona, Spain: Based on the wavy forms of nature, the slender towers and ornate facades are modeled on the rock formations
St. Peter’s Basilica, Vatican City, Italy: If you’re not afraid of heights or confined spaces, climb up the 320 stairs to the top of the dome and enjoy dazzling views
St. Paul’s Cathedral, London, England: Inside, it’s as much about the histori