Weston Observatory

Oak Hill, Derryfield Park, Manchester, New Hampshire. County/parish: Hillsborough.

Added to the National Register of Historic Places May 28, 1975. NRIS 75000128.

1 contributing building.

From Wikipedia:

Weston Observatory (Manchester, New Hampshire)

The Weston Observatory is a historic folly on Oak Hill, the high point of Derryfield Park in Manchester, New Hampshire. Built in 1897, the granite tower is a prominent local landmark, given to the city by James A. Weston, a Manchester native who served twice as governor of New Hampshire. The tower was listed on the National Register of Historic Places in 1975.

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National Park Service documentation: https://catalog.archives.gov/id/77845190