E by Equinox
You'll likely spot a celebrity or three at just about any Equinox location in the city, but the VIPs who don't want to get spotted head to E by Equinox. The highest-end version of the already high-end gym chain is a standalone members-only fitness club tucked into a Madison Avenue townhouse. Bespoke coaching, private classes, and luxury amenities make it the most elevated - and expensive - Equinox outpost in town. This one's not for the faint of heart - or budget.