About 100 years ago, the poet Robinson Jeffers built Tor House and the lookout tower beside it by himself, using huge stones rolled up from the beach below in Carmel, California. Read more here, and click photo to enlarge.
Set across the flower garden from Tor House, the tower is constructed with what Jeffers called “heavy sea-orphaned stone,” and stands forty feet tall. Jeffers built it himself, rolling rocks (some weighing four hundred pounds) up from the coast. “I hung / Stones in the sky,” he wrote, and he did, first using ramps, later hoisting them into place with block and tackle. (Harper's magazine, September 2020)