Glider pilot licenses are not unified among Europena countries, which
means that each country handles this differently. Contact the FOCA of
the country in which you plan to fly and ask. You will need a medical,
except in Switzerland.

One of the best soaring places are the southern Alps of France, but only
if you are experienced in mountain flying. (Otherwise most clubs will
gladly instruct you.) There are many glider places in the French Alps
(Gap, Sisteron, Vinon, Barcelonette, St. Auban ...) Be sure to contact
tmen early enough and ask how they handle glider renting. Be aware that
most operations are clubs (except St. Auban).