Basilica -

The largest Catholic church in North America. Reviewers on Yelp love the diverse "national" chapels but note its opulent style can feel "gaudy" to some. Cathedral Basilica of the Sacred Heart Catholic cathedral ClosedNewark, NJ

Praised for its French Gothic architecture and free organ concerts. The Basilica of St. Patrick's Old Cathedral Catholic cathedral ClosedLower Manhattan basilica

Gaudí's unfinished masterpiece is praised for its unique "tree-trunk" columns and forest-like interior. Saint Mark's Basilica ClosedVenice, Metropolitan City of Venice, Italy The largest Catholic church in North America

Famous for its glittering gold mosaics and Byzantine influence. Visitors recommend booking tickets in advance to skip the heavy Piazza San Marco crowds. Notable U.S. Basilicas The Basilica of St

: Free entry, unparalleled historical and artistic significance, stunning architecture.

Widely considered a "must-see" masterpiece. Reviewers on Tripadvisor and Yelp frequently mention Michelangelo’s Pietà and the breathtaking view from the dome climb.