The main attraction of Fontaine de Vaucluse is the river on which it sits. The source of the Sorgue is found here, a network of underground rivers and streams fed with water from the surrounding mountains.
This impressive 'hidden' spring comes to light at Fontaine de Vaucluse where it forms a large emerald green pool - divers have measured it's depth to be 308 metres. Only when you see the white water rapids taking water away do you realise that it is not just a pool, but a fully fledged river with it's source underground. In the rainy spring & autumn seasons, it can gush up to 200 cubic metres of water per second. It is the largest natural spring in France (and 5th largest in the world).
The river has a fantastic green colour, very striking with the sun shinning down, and the blue sky above. The village of Fontaine de Vaucluse is found after the rapids where the river calms itself and it winds around watermills and dams before continuing downstream. An old paper mill (open to the public) is the only remaining indication that the village was a hotbed for paper making in the 17th & 18th century.
Just opposite the mill on the other side of the mill are the ruins of the 14th century Castle of the Bishops of Cavaillon. The walk from the village to the souce of the river (La Fontaine) will take you around 20 minutes. There is a bike rental store in the village if you prefer.
A number of restaurants and cafes line the river, and the village is fairly touristy and very popular so try to come out of season if you can. If you are driving, note that there is only pay-parking in the villlage.