In recent years, a number of Greek Archaeological sites, most notably the Acropolis have opened late on the nights of full moons in the summer. This gives visitors to see the sites from a completely different perspective to how they appear during the day, made more unique by the limited number of times that it is possible to do this.
Kathimerini (English Edition) 
Tuesday August 8, 2006
Ministry says ancient sites will be open late tomorrow for full moon
The Culture Ministry said yesterday that it will observe its annual tradition of keeping Greece’s main archeological sites open past midnight tomorrow so visitors can enjoy the full moon. The sites that will be open until 1 a.m. include the Acropolis, Sounion, Kerameikos, Ancient Olympia and Delphi, the ministry said.