Napa Valley

Set at the northern end of the Napa Valley, this region is rich in geothermal mineral waters and naturally-occurring hot springs. It’s famous for its mud baths, which have been used for thousands of years to treat health and skin problems. The mud originates from mixing the local volcanic ash with hot spring water. Its most famous spa, the Calistoga Spa Hot Springs Resort, has operated there since 1900.

Bound by mountains on either side, the gem among California’s outstanding wine regions is best known for Cabernet Sauvignon, though the warm, temperate conditions favour many grape varieties. It’s also one of America’s gourmet heartlands, with world-class restaurants, top-notch spas and a range of outdoor activities to sooth and excite more than your pallet.