Loop C Comfort Station, Loop D Comfort Station - Credit: Wikimedia Commons
The Loop C Comfort Station and the Loop D Comfort Station are public toilet facilities in Bryce Canyon National Park's North Campground, individually listed on the National Register of Historic Places in 1995 for their significance as structures relating to the park's administrative infrastructure, and for their integrity as examples of rustic architecture. The National Park Service rustic style structures were built in 1935 as part of the first planned campground in the park by Civilian Conservation Corps labor. Plans were developed by the National Park Service Branch of Plans and Designs. Similar facilities in Loops A and B were not built until the 1950s. Read more on Wikipedia
Source: en.wikipedia.org