Thermopolis is best known for Hot Springs State Park, and for good reason. This Wyoming state park features water that flows from natural hot springs at a temperature of 134 degrees Fahrenheit. The park offers several areas where you can see the colorful mineral water that pours from these hot springs and its effects on the landscape. Most of the park’s water bubbles up from the Big Spring, a turquoise spring that releases 3.6 million gallons of scorching water per day. Another park favorite, the Rainbow Terraces are naturally-formed walls where hot spring water plummets into the Bighorn River. An adjacent walkway lets you stroll beside these terraces, or you can enjoy a better view from the Swinging Bridge suspension bridge.