"A favorite spot for locals and visitors alike, this resort centers around a natural-rock lake where guests soak in the mineral-filled waters. The actual hot springs were discovered in 1905 by brothers Robert and Thomas Swan, who had heard that a U.S. Geological Survey crew had seen steam rising from a valley near the upper Chena River but hasn't found the source. Long story short: The brothers found it and turned it into a commercial venture. Today there are 86 simple rooms, plus a year-round ice museum and heated yurts for Northern Lights–spotting." - Bailey Berg