Plovdiv 40,000 objects. The Museum of Natural Science was inaugurated in 1955 in the old edifice of the Plovdiv Municipality built in 1880. It is among the most important museums in the country with rich collections in its Paleontology, Mineralogy, and Botanic sections. There are several rooms for wildlife and it contains Bulgaria's largest freshwater aquarium with 40 fish species. It has a collection of minerals from the Rhodope mountains. The Museum of Aviation was established on 21 September 1991 on the territory of the Krumovo airbase to the southeast of the city. The museum possesses 59 aircraft and indoor and
Plovdiv the Kapitan Raycho Street, Forum in Trakiya, Excelsior, and others. Plovdiv has three large shopping centers: the €40 million Mall of Plovdiv (opened 2009) with a shopping area of , 11 cinema halls, and parking for 700 cars; Markovo tepe Mall (opened 2016); and Galeria Mall which is 6 stories high with 127 000 m area, half of which is the parking lot and the rest is shopping area. Due to high demand for business office space, new office and commercial buildings have been built. Several hypermarkets have been built mainly on the outskirts of the city: Metro, Kaufland, Triumf,