Fort Nonsense - Credit: Wikimedia Commons
Fort Nonsense is a historic earthen fortification at Annapolis, Maryland. It consists of two arcs of embankments and ditches that date at least to the early 19th century. It is located near on a hilltop which has remained undisturbed by the surrounding Annapolis Naval Ship Research and Development Center. It is the last vestige of Annapolis Harbor fortifications. Read more on Wikipedia
Source: en.wikipedia.org