The lights that make one tower disappear

The Doubling Point Range Lights are a pair of lights on the lower Kennebec River in Arrowsic, Maine. They were built in 1898 as part of a major improvement to the river's navigational aids. They are the only surviving pair of range lights in the state and were listed on the National Register of Historic Places as the Kennebec River Light Station on January 21, 1988.

The lights are located at a point where the normally south-flowing river makes a sharp turn to the east, followed by a turn back to the south. The range lights are set on the north side of the second turn. They are oriented so that they are in alignment when seen from the main channel to the south. When a ship is properly in the main channel, only the southern light will be visible.

The light station consists of two octagonal wood frame towers, a keeper's house, and an oil house. The towers are joined to the keeper's house by wooden walkways with railings. The southern tower is 17 feet in height, while the northern one is 13 feet tall. The keeper's house is an L-shaped wood-frame structure with a granite foundation. The oil house is a small brick structure with a gable roof.

The range lights were established fifteen years after the founding of the Bath Iron Works, a major shipbuilder located one and a half miles upriver. They were part of a major upgrade of the river's lights that included the Doubling Point Light, Perkins Island Light, and Squirrel Point Light.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons