Rated Westchester’s Best Day Spa in 2010, 2012 and 2013! Discover a place where stress reduction and relaxation are more than just a luxury, but a way of life... A place where affordable dreams become reality... close to home... yet secluded. Welcome to a world of tranquility... The Tranquility Spa... Consider it your vacation get-a-way. As the largest spa in Westchester with 21 treatment rooms, come in to Tranquility Spa where our entire environment is devoted to achieving peace and relaxation.