Mount Ymittos in Athens, Attica, is covered with beautiful pine forest, impressive caves, historic monasteries and many marked footpaths and is very close to the center of Athens.
It is also a great birdwatching area and attracts an impressive number of bird species.
It has great view and if you climb up, you will be able to see the port of Piraeus on the one side and the Athens airport on the other side.
One way to explore the mountain is to take a five-minute bus ride from the gates of Panepistimioupoli (University City) on Oulaf Palme Street in Ilissia, and get off just a few meters away from the Ring Road that separates Ymittos from the university campus. Cross carefully from below the ring road, and you’ll find yourself at the base of a huge green mountain with its footpaths and deserted old churches.
There are paths marked with concentric circles as you climb and they will take you all the way up to the antennas.
Source: www.ecotourism-greece.com