In Exarcheia is located the National Archaeological Museum of Athens, the National Technical University of Athens and Strefi Hill. The central square features many cafes and bars with numerous retail computer shops located mainly on Stournari street, also called the Greek Silicon Valley. Located on Exarcheia square is one of the oldest summer cinemas of Athens, called "Vox", as well as the Antonopoulos apartment building, known as the "Blue Building", because of its initial color, which is a typical example of the modernist movement of Greek architecture in the inter war period. Due to the political and intellectual character of the region, many bookstores, fair trade shops and organic food stores are also located in Exarcheia.