E at Equinox
And you thought your Kiehl's was fancy. Both locations of this Equinox off-shoot (up-shoot?) in NYC and Greenwich, CT are tranquil and nearly unpopulated, because hey, how many people can shell out $26,000 a year for a gym membership? When you dish out the big bucks, though, you'll get freshly laundered athletic gear, personal training, nutrition guidance, and private changing cabanas. Plus, it's invitation only and you can only enter after a retina scan, so no running into your former gym-nemesis here!
[Photo via @pharenheit]