 Up until 1968 the maximum allowed height of a building was 35 meters and from 1985 to present it's 27 meters.Until 1968, the tallest building in Athens was the 14 storey Athens Hilton, which was completed in 1963.The construction of the Athens Tower started in 1968 and was undertaken by Αλβέρτης - Δημόπουλος (Alivertis-Dimopoulos) Α.Ε., one of the biggest construction companies of the time.