Seagrave Memorial Observatory, operated by the organization Skyscrapers, Inc.

The building at (41.84452, -71.58994) is the "Meeting Hall".
* There is a monument adjacent to the hall, at (41.84451, -71.58981), called the "Memorial Garden".

The dome at (41.84471, -71.58988) is the main observatory. It houses an 8¼" Clark refractor.

The structure at (41.84487, -71.59003) is a double roll-off roof observatory, built 1987.
* The northwestern side of the structure houses a 12" Patton reflector.
* The southeastern side houses a 12" Meade Schmidt-Cassegrain.

The structure at (41.84486, -71.58989) is a roll-off roof observatory, built 2001. It houses a 16" Meade Schmidt-Cassegrain.

The grass field at (41.84436, -71.58964) is used as parking for the observatory.