The landscape of central Yellowstone bubbles and seethes. In its Upper Geyser Basin, boardwalks tour around geysers, hot springs, and steaming vents. The most central feature, of course, is Old Faithful Geyser.
But the Upper Geyser Basin holds much more to see. Geyser Hill houses a series of small, sputtering geysers. Further west, Castle and Grotto Geysers have created unique shapes with sinter, looking like large sculptures. At the end of the boardwalk, Morning Glory pool gleams with green and gold. Between them, loops take in Beauty Pool, Chromatic Spring, and Riverside Geyser, among other features.
On the Daisy Loop, Daisy Geyser erupts periodically while clear blue water boils in the white-and-orange rimmed Punch Bowl. You can walk from the Daisy Loop to Black Sand Basin to see Emerald Pool and Sunset Lake. A trail also leads to Biscuit Basin to see the crystal blue Sapphire Pool and small Jewel Geyser. You can also drive to Black Sand Basin and Biscuit Basin.