On the southern slopes of Mount Parnassos, northwest of Athens are the modern and ancient cities of Delphi. On the ancient city lies the Temple of Apollo, a part of Delphi's archaeological site. It was cited as Unesco's World Heritage Site in 1987 (together with the theater, the gymnasium, the treasury, and the "Tholos"). It is one of the most important and most imposing temples of antiquity. The ruined temple originally has 6 columns in front, and 15 on sides. The exterior used to be decorated with shields. Today, the visitors can see one complete column of the facade and the portion of five more columns. (Delphi, Greece / 2010)