TUPAR has a website. Please visit tupar.com
Airspace waypoints are made by 5 letters words which are relatively easy to pronounce. Tupar is such a word. It is a waypoint over France.
This picture shows the cockpit F-BVOB, a Piper PA28 from Aeroclub Chaubuisson, flying over french airspace, around Paris, a few hundreds kilometers from Tupar. F-OB or Oscar Boulets is a nice aircraft.
Appart from being on tupar.com, tupar as a waypoint can be seen here on this chart, between Nantes, Cognac and Poitiers.
TUPAR being south of Nantes, the most likely scenario where you would overfly it is by flying in or out of Nantes.
Enjoy the flying.
The TUPAR website is simple, yet it follows most recommendations.