Formerly known as Supple Spa, The Couple Spa changed its name to reflect a growing reputation for its luxuriant two-person treatments. As documented in New York magazine and Time Out New York, the spa has five themed rooms. Among them are the Paris room with side-by-side massage beds; the Sunset room; and the Moonlight room with tea and reflexology. But the most lavish is probably the Tokyo room, where duos can slip into a tub brimming with rose petals and sip red wine.

And there's far more than massage therapy here. Pairs can also indulge in aromatherapy, salt scrubs, and collagen facials, the latter of which may or may not keep you at your current age for the rest of time.