St Mark's Basilica is a stunning cathedral located in Venice, Italy. Known for its intricate architecture and rich history, it was originally built in the 9th century to house the relics of Saint Mark, the patron saint of Venice. The basilica features a blend of Byzantine, Romanesque, and Gothic styles, making it a unique example of religious architecture. The exterior of St Mark's Basilica is adorned with beautiful mosaics and sculptures, while the interior boasts a dazzling array of gold mosaics that depict biblical scenes. The basilica is situated in Piazza San Marco, a popular gathering place for both locals and tourists.