We started with 32 new or newly renovated spas in the U.S., our readers voted for their favorites in each round, and we've made it to the end of our March Madness-inspired contest. The St. Regis Spa at The St. Regis Longboat Key Resort (FL) is the winner of this year's contest. Congratulations!

St. Regis Spa at The St. Regis Longboat Key Resort (FL)

The 20,000-square-foot St. Regis Spa boasts 14 treatment rooms and a hydrothermal area, which includes a Finnish sauna, a eucalyptus steam room, a snow shower, vitality waters, a cold plunge, and sensorial showers. The spa features an outdoor vitality pool with six specialized hydrotherapy pods overlooking the Gulf of Mexico, a private suite with a shower and hydrotherapy tub, and The Celebration Bar offering champagne and locally sourced beverages.