The Prospect Hill Monument, also occasionally called the Prospect Hill Tower is a stone structure in Somerville, Massachusetts. It is a block away from the heart of Union Square, a neighbourhood in Somerville. Its name is formally the Prospect Hill Memorial Flag Tower and Observatory.
The tower is four stories tall and built out of iron and stone. The lower deck, outside of the first floor is open to the public and offers a panoramic view of Boston, Somerville, and Cambridge. The city of Somerville has offered tours of the tower.[1] It has been refurbished several times since in order to preserve its structural soundness.[citation needed]
There is a tradition of annual flag-raising ceremonies involving American Revolutionary War reenactors that are held at Prospect Hill on New Year's Day.[2]