Asmara's architecture after 1935 was greatly improved to become a "modernist Art Deco city" (in 2017 has been declared a "UNESCO World City Heritage"), featuring ''eclectic and rationalist built forms, well-defined open spaces, and public and private buildings, including cinemas, shops, banks, religious structures, public and private offices, industrial facilities, and residences'' (according to UNESCO's publications). The Italians designed more than 400 buildings in a construction boom that was only halted by Italy's involvement in WW2. These included art deco masterpieces like the worldwide famous Fiat Tagliero Building and the Cinema Impero