At the northern part of Athens, close to the foothills of Mount. Penteli, there is a secret gem that will definitely compensate you to the fullest for the 40 min car-ride required for you to get there.
The Valanari river ends up to a small waterfall which creates a shallow pool, ideal for a quick refreshing dip!
Depending on the flow of the river, you may even find two waterfalls instead of one! The Valanari river waterfall is the only one still surviving in Athens and its clear waters coming from the springs of Penteli promise you a unique experience. You can reach the waterfalls either by car or by public transport; there is a bus route available that will take you on the spot!