Calais Observatory, Calais

Name: Calais Observatory
Address: Calais, United States

#4 among attractions in Calais

Observatories and planetariums

Gallery (2)

Map

Gallery

Facts and practical information

The Calais Observatory is a pair of granite fixtures in Meridian Park in Calais, Maine. The two stones were used for mounting scientific equipment used in a variety of astronomical observations, principally for the accurate calculation by the United States Coast Survey of Calais's longitude with respect to meridians in Cambridge, Massachusetts, and Greenwich, England. The site was listed on the National Register of Historic Places in 2012, and is part of the National Oceanic and Atmospheric Administration's Heritage Trail program. At the time of its longitude determination in 1866 with respect to the Greenwich Meridian, it was arguably one of the most precisely located places in the United States. ()

Built: 1857 (167 years ago)Coordinates: 45°11'5"N, 67°16'51"W

Address

Calais United States

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Day trips

Calais Observatory – popular in the area (distance from the attraction)

Nearby attractions include: Whitlocks Mill Light, Holmes Cottage, Ferry Point International Bridge.

3 miSE
Lighthouse
Whitlocks Mill Light, Calais
77 min walk • The Whitlocks Mill Light is a lighthouse on the south bank of the St. Croix River in Calais, Maine. It is the northernmost lighthouse in the state of Maine, and was the last light to be built in the state.
~1920 ftNE
Museum, Science museum, History museum
Holmes Cottage, Calais
10 min walk • The Holmes Cottage is a historic house at 521 Main Street in Calais, Maine. Estimated to have been built about 1820, it is the oldest surviving structure in the town, and is notable for its association with Dr.
0.5 miN
Bridge
Ferry Point International Bridge, St. Stephen
13 min walk • The Ferry Point International Bridge is an international bridge, which connects St. Stephen, New Brunswick in Canada and Calais, Maine in the United States, across the St. Croix River. The bridge connects the two cities' downtowns. St.