The Church of San Marco is one of the most important tourist attractions and monuments in Venice, Italy. It is located at the eastern end of San Marco Square, next to the Doge's Palace. It was originally the Doge's Church until it became the cathedral of the city since 1807 AD, and the church is characterized by its very beautiful architecture. Which fascinates everyone who pays attention to its details, as the decorations and colorful shapes on the walls, columns and arches. From the inside, the cathedral enjoys its decorations that spread on its walls and courtyard, which were designed in local workshops linked to the Byzantine world.