The Land's End Historic District encompasses a well-preserved enclave of summer residences built in the early 20th century in the Port Clyde area of St. George, Maine.

[1] The town of St. George occupies a peninsula and islands on the west side of Penobscot Bay in the Mid Coast region of southern Maine.

After participating in a series of Arctic exploratory expeditions, Porter sought a retreat where he could engage in pursuits in astronomy and art, and chose the area south of the fishing village of Port Clyde.

He specifically sought to harmonize the buildings with the surrounding environment, including natural features such as pergolas finished in tree bark, and unfinished wooden interiors.

Porter's own house, a stone structure in the English Revival style, includes a rounded section in which he intended to mount a telescope.