Visitors send postcards of the houses on Ridgecrest Circle in Denton, TX to residents of different streets named Ridgecrest Circle all over the United States. First, visitors choose one of the cities depicted on the poster on the wall. Next, the choose a postcard from the stack. They must then look up a mailing address located in the city of their choice. They then write the address onto the postcard, affix a stamp and mail it in the slot provided on top of the shelf.