Catacombs in December?
 

My boyfriend and I are going to Paris in the middle of December (21-27) and we were wondering if the catacombs underground are still available for tours?

The catacombs are open all year. You can get an audioguide at the entrance for 5 euros.

The temperature in the catacombs is invariable at 14° so you might even feel warm in there in December, which is not at all the case for summer visitors.