I already mentionned Mariage Freres's Teas: you can buy them, but you can also enjoy them in one of their Tea Rooms. Hushed ambiance, orchids, a range of incredible scents, and hundreds of Teas to taste. It is like a journey in an English Trading Post.

"A perfume of adventure and poetry escapes endlessly from every cup of tea"
Henri Mariage

The waiters dressed in white are real Tea Experts. They always give good advice.

Yesterday I had a Tea called "Fall in love" with candied chestnuts and vanilla scents, it was very tasty, but while paying, my friend and I were talking about how we like our tea. I personally like it nature, or with a hint of lemon. The waiter was quietly listenning and when we left, he handed me that little sample of "Russian Breakfast": "If you like lemon Miss, then you should try this one, it is very light, very delicate and subtle". It smells like lemongrass, I can not wait to try it!

One of their many addresses :
Comptoir de thé
30 rue du Bourg-Tibourg, Paris 4e
Tél. : +33(0)1 42 72 28 11
Mariage Frères