World's Coolest Hot Springs
Chena Hot Springs, Fairbanks, AK
The Soak: The adults-only Rock Lake, fed by sulfur-tinged springs, reaches a toasty 106°F, but the truly hot ticket is the blazing aurora borealis (northern lights), neon-hued curtains of charged particles that dance across the late-night sky above you.
The Scene: Rock Lake is part of the 105-year-old Chena Hot Springs Resort; located 60 miles from Fairbanks, it has 80 rooms and suites, plus an indoor springs-fed pool (chlorinated and 94°F), a spa, an ice museum, and dogsled tours.
When to Go: Year-round, but the northern lights are most spectacular from September to March.