Photograph: AIRE Ancient Baths Earlier this week, the beloved spa debuted its second-ever location in NYC and its ninth globally at 305 East 61st Street by Second Avenue on the Upper East Side.

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Aire Ancient Baths' newest space, located on the Upper East Side, dates back to 1900 and was once used by a famous Manhattan museum to store antiques and works of art. Now, in this 9,600-square ...