The Brukenthal National Museum is a museum in Sibiu, Transylvania, Romania, established in the late 18th century by Samuel von Brukenthal (1721-1803) in his city palace. Baron Brukenthal, governor of the Grand Principality of Transylvania established his first collections around 1790. The collections were officially opened to the public in 1817, making the museum the oldest institution of its kind on the territory of modern-day Romania.