The tiny principality of Andorra, in an area tucked between France and Spain, wins the award for best skiing in the Pyrenees, as well as fewest access points to the country and the destination most dependent on tourism. Over 85% of the GDP of the country comes from you and me taking our skis and boards onto the slopes each year or lacing up our boots and hiking through the mountains in the summer, so the whole country revolves around the mountains. Sounds like heaven if you ask me.
What to do
Ski areas have been combining runs and linking to each other with lifts recently, so now there are just two separate places to race over the snow. Vallnord and Grandvalira are both interconnected series of several resorts that have combined with each other to form mega resorts where the snow-riding options are pretty close to endless.
In the summer, most of the visitors to Andorra explore on foot the same territory that they explore on skis and boards during the winter. Hiking trails snake out over the tops of mountains in every direction and the roaming is unbounded.
There aren't any flights to Andorra, the only way in or out of the country are through the two roads entering France and Spain. If you can't drive to Andorra and need to catch a flight, the closest airports are Barcelona and Toulouse, with shuttle services between Andorra and both airports.
Where to stay
Chances are if you're heading to Andorra in the winter to ski, you'll have a room at your resort on the mountain. If you've got the lift tickets but nowhere to stay, there are hotels in the area independent of the ski resorts as well as some hostels that will put you up for the night. For more info on Andorra, check out the message boards where you can ask and answer questions about traveling in Andorra.