Treasury of San Marco, Religious art museum in St Mark's Basilica, Venice, Italy

The Treasury of San Marco is an art and religious museum housed in a set of rooms within St Mark's Basilica in Venice, displaying around 283 objects made from gold, silver, glass, and precious stones. The collection includes Byzantine chalices, Islamic bowls, and ecclesiastical pieces, all arranged in glass cases within compact, dimly lit rooms.

Most of the collection came to Venice after the Fourth Crusade in 1204, when the city's forces sacked Constantinople and brought back a large number of objects. Further pieces were added over the following centuries through gifts and trade connections across the eastern Mediterranean.

The objects on display come from Byzantine, Islamic, and Western European workshops, placed side by side in glass cases without hierarchy. Walking through the rooms, you can see how different traditions of working with gold and glass once met in Venice.

The Treasury is inside St Mark's Basilica on St Mark's Square, which is easy to reach on foot from most parts of central Venice. Try to visit early in the day, since the basilica sometimes closes for religious events and the rooms can get very crowded later on.

The alabaster throne-reliquary of Saint Mark was made in Alexandria in the 6th century and reached Venice through Grado; the Russian source records it as a gift from Emperor Heraclius to the Patriarch of Grado. It is among the oldest pieces in the collection, set apart from the gold and silver nearby.