[1] The Deshon-Allyn House is located on the campus of the Lyman Allyn Art Museum on the east side of Williams Street, north of downtown New London.

It is a large 2½-story structure built out of random-laid stone, with corner quoins and openings framed by ashlar granite.

The recessed entry is flanked inside the opening by Ionic columns and sidelights, with a transom window across the top.

[3] The house was built in 1829 for Captain Daniel Deshon, the master of a local whaling vessel, and is a particularly elegant example of late Federal architecture.

It was purchased in 1851 by Lyman Allyn, also a whaling captain[3] who greatly enlarged his fortune by investing in railroads and other businesses.