1. The Spa at Equinox Hotels

Location: New York

Equinox has made its name through a cutting-edge approach to fitness, and at the brand’s New York hotel, it applies the same ethos to its spa offerings. Feeling a bit under the weather? Book a visit to the MLX i3Dome, a touchless detoxifying treatment in which you lie down in a machine equipped with infrared, plasma and light emitters designed to boost your metabolism and ease what ails you. Meanwhile, when it comes to sleep technology – the new wellness frontier – Equinox is streets ahead of the curve, thanks to its futuristic Wave Table where you’ll be immersed in an environment of optimised sound and resonance, lulling you into the ultimate power nap. There’s also targeted cryotherapy facials and a whole host of IV drip therapies filled with special brews to help with energy, tout anti-ageing benefits and more.