Alexandreio Melathron, also called Palais des Sports, is an indoor sports arena located in Thessaloniki, Greece, with a capacity of 5,500. The arena hosts the home games of Aris BC, member of the Greek League.
The arena was built in 1966 and was rapidly redeveloped and updated in 2004 in preparation for the Athens 2004 Olympic Games. The updates involved reconstruction of all the building's external and internal areas. Apart from what is directly visible to everybody, other works included new electromechanical, air-conditioning and audiovisual facilities. New seats, CCTV and new lighting were also installed.