It may seem strange to hold a holistic retreat in a World War I barracks, yet nevertheless it works.

10. SenSpa | San Francisco, CA

A good spa is all about relaxing, and the Allyu sets the tone when you walk in.

9. Allyu | Chicago, IL

Ten Thousand Waves' legions of followers can't be wrong about its Japanese-style hot springs.

8. Ten Thousand Waves | Santa Fe, NM

Spa at Terranea, 20 minutes from LAX, features a shop, pool, gym, café, steam rooms, and Jacuzzis.

7. The Spa at Terranea | Palos Verdes, CA

The Lodge at Woodloch is a vacation spa in Pennsylvania that has won several honours.

6. The Lodge at Woodloch | Hawley, PA

Spa Montage is part of a hotel network, yet we included it for numerous reasons.

5. Spa Montage | Deer Valley, UT

It's hard to narrow down what we adore about this little franchise, which has locations in Portland and Boulder.

4. The Dragontree | Portland, OR

Since the late 1970s, Blackberry Farm has attracted overnight visitors and foodies. Wellhouse debuted in June 2014.

3. Wellhouse, Blackberry Farm | Walland, TN

If Mii amo's environment in Sedona's Red Rock-Secret Mountain Wilderness doesn't captivate you, its treatment menu will.

2. Mii amo | Sedona, AZ

Spa Solage stands out even in wine country, where a beautiful resort and spa is around every corner.