Ladies and Gents Spa, New York

Approaching its Gramercy Park storefront on 3rd Avenue, Ladies 'n' Gents Spa might appear small. But step inside, and the contemporary space stretches deep into the building, embracing several bright-red styling chairs and a reception area where the staff pours whiskey and whips up margaritas.

The spa also boasts enough room behind closed doors for a range of other services, including body waxing, laser hair removal, and herbal facials.