Hidden inside a 55-foot limestone dome in Utah lies the Homestead Crater, a geothermal hot spring that's perfect for a year-round soak. With crystal-clear waters at a toasty 90-96 degrees Fahrenheit, visitors can scuba dive, snorkel, or just chill out in this natural wonder. The crater's rich history adds to its allure, making it a must-visit spot for anyone looking to unwind and explore something unique.