سان ماركو, or St. Mark's Basilica, is a famous cathedral located in Venice, Italy. It is known for its stunning Byzantine architecture and intricate mosaics that depict various religious scenes. The basilica is dedicated to St. Mark, the patron saint of Venice, and houses his relics, making it a significant pilgrimage site. The exterior of سان ماركو features impressive domes and a grand façade adorned with sculptures and mosaics. Visitors can explore the interior, which is filled with golden mosaics and ornate decorations. The basilica is a key symbol of Venetian history and culture, attracting millions of tourists each year.