"Spanning more than 5,500 acres and containing 47 thermal springs, this urban national park combines historic resort-era architecture, forested hikes, scenic creeks and parts of downtown. It produces nonvolcanic geothermal water—over 700,000 gallons daily—and was federally preserved long before many other parks. Visitors can sample mineral-rich spring water at multiple fill stations, follow more than 26 miles of trails that range from short lookout strolls to multi‑mile backcountry routes, and attend lively seasonal events year-round. While there is no open outdoor bathing in the springs, several operating bathhouses and a visitor center tell the area’s cultural history, and an observation tower and extensive trail network offer sweeping views and strong mountain‑biking opportunities. General park access is free, though some attractions and tours charge admission or require reservations." - Caroline Eubanks Caroline Eubanks Caroline Eubanks is a Lowell Thomas Award-winning travel writer and the author of “This Is My South: The Essential Travel Guide to the Southern States.” Her work has been published by Condé Nast Traveler, Garden & Gun, Architectural Digest, and more. Travel + Leisure Editorial Guidelines