The collections include plants, mineralogy, petrography, palaeontology, and entomology pieces, nonvertebrates, birds, reptiles and mammals. It is one of the oldest Romanian museums, established in 1796 by the Bethlen Reformed Academic College. In 1862 from the former rarities collection grew the history collection. In 1950 the museum was separated from the college and the natural sciences collections made up a cultural institution on its own - The Aiud Museum of Natural Sciences. The museum heritage is very rich, as most of the over 30,000 exhibits in four halls each with their own specificity. The museum is situated in the precincts of the Gabriel Bethlen College, in the left wing, inaugur...ated in 1886, on the first floor of the building.