La Vale Tollgate House - Credit: Wikimedia Commons
La Vale Tollgate House is a historic toll house in La Vale, Allegany County, Maryland, United States. It is a two-story brick structure built in 1835–1836, with seven sides—a basic polygon plan. A one-story Tuscan-columned porch extends around the five outer sides of the polygonal portion. On top is a non-functional reconstructed cupola. The building served as a toll house on the Cumberland or National Road and was the first such structure to be erected. Read more on Wikipedia
Source: en.wikipedia.org