Col. Smith House (also known as the Adams Mansion), 1924.

This Federal style structure was originally built as the carriage house for the large 23-acres estate of John Adams' daughter Abigail and her husband, William Stephens Smith. Despite grand plans and an idea to name the estate after George Washington's home, the Smiths were forced to sell the estate due to financial troubles. This building was completed in 1799 by the next owner, William T. Robinson, a well-to-do merchant. By the 1820s the building and its nearby structures and land were purchased and converted in the Mount Vernon Hotel, which was a day hotel catering to a rising middle class looking to escape the crowding and congestion of downtown. The hotel would only stay open for seven years. For the rest of the 19th and early 20th century it was a private residence. The building was sold to Standard Gas and Light Company in 1905. The Colonial Dames of New York purchased it in 1924 (the year this photo was taken) and turned it into a museum. It has continued in that capacity into the 21st century.