San Marco is a district located in the heart of Venice, Veneto, Italy. It is one of the six sestieri (districts) that make up the historic center of the city and is renowned for its iconic landmarks, rich history, and vibrant atmosphere. The district is named after the magnificent St. Mark's Square (Piazza San Marco), which serves as its centerpiece. This expansive square is considered one of the most beautiful squares in the world and is surrounded by stunning architectural masterpieces. The most prominent of these is the magnificent St. Mark's Basilica, a Byzantine-style cathedral adorned with intricate mosaics and sculptures. The bell tower of St. Mark's Campanile offers breathtaking panoramic views of the city.