Saint-Cirq-Lapopie is incredible. I have never ever seen any other village like this in France. It doesn't even seem real, at least not until you have to walk ridiculous inclined streets, then reality sits in. It is one of the most popular stops in the Lot department and on the list of Les Plus Beaux Villages de France.
This small, medieval town looks over the Lot River and is so high up that your nose could bleed. You need to drive, and you need to bring a big chunk of change to pay for parking. They give you 30 minutes free but it isn't physically possible to visit the town that fast (plus would you really want to?).
Walking the streets is like walking through a museum, everything and anything is historical. It is also extremely overcrowded during the summer months so it is best to visit in May or September. You will want good pictures of this village, I promise.

Fort de Saint-Cirq-Lapopie

In Saint-Cirq-Lapopie there are many shops, restaurants, and attractions. The main attraction is the thirteenth century fort that acted as a defense mechanism for the village. You can hike your way up to the top! It's breathtaking, unless you're afraid of heights then in that case it's the worst thing you'll ever encounter.