Modern shopping malls such as the Unirea Shopping Centre, Bucharest Mall, Plaza Romania, and City Mall emerged on pre-existent structures of former hunger circuses. Another example is the conversion of a large utilitarian construction in Centrul Civic into a Marriott Hotel. This process was accelerated after 2000, when the city underwent a property boom, and many Communist-era buildings in the city centre became prime real estate due to their location. Many Communist-era apartment blocks have also been refurbished to improve urban appearance.