D. H. Springhouse - Credit: Wikimedia Commons
D. H. Springhouse is a historic springhouse located at Bel Air, Harford County, Maryland. It is a little gray stone building set into the base of a steep hill. This is a stone springhouse with a schoolroom above, 16.5 feet by 23 feet, with one narrow wall set into the bank over several fresh springs. It was built about 1816, and the quality of stonemasonry is notable. Read more on Wikipedia
Source: en.wikipedia.org