Koutouki cave is located on the eastern slope of Hymettus, in Peania, at an altitude of 510 m. above sea level. It was discovered in 1928 by residents of the area and was explored and mapped in 1954 by the Greek Speleological Society. The natural beauty of the cave and the fact it is in small distance from Athens contributed to its tourist development in the '60s. For this purpose an artificial entrance in the form of a tunnel was constructed on the west side of the cave and now the tourist route has a length of 350 m.

Vravrona is located on the south coast of Attica in the bay of Vraona which is crossed by the small River Erasinos. On the hill there is the temple of Artemis Vravronia which is one of the oldest and most famous sanctuaries in Attica. The sanctuary of the goddess and the surrounding area constitute the archaeological site of Vravrona. Vravrona was one of the 12 ancient cities of Attica and is named after the hero Vravrona. According to tradition, the sanctuary housed the statue of the goddess which had been brought there by Orestes by order of Artemis.