Jim Bishop never finished high school and never had any formal training in building, yet he spent more than 50 years constructing a 16-story, 160-plus-foot medieval castle by hand. It is widely considered the largest one-man construction project in the world.

It began when he was 15. In 1959, Bishop used money saved from a paper route, mowing lawns, and working in his father’s ornamental ironworks to buy two and a half acres of forested land high in the mountains of southern Colorado. He was too young to sign the papers himself, so his parents did it for him. Then he biked 48 miles into the mountains to see what he had bought.

He had already walked away from school after a dispute with an English teacher, and he taught himself ironwork and stonemasonry. In 1969, he and his father began a small stone cottage on the land. Drivers on Highway 165 slowed down to ask whether it was a castle. Some of them mocked it. Bishop decided to build one.

For decades he hauled, shaped, and set the stone himself; his son has said he handled each rock about six times before it found its place in a wall. The cottage became a three-story fortress with towers, buttresses, wrought-iron bridges, stained glass, a Grand Ballroom, and a fire-breathing metal dragon, built from an estimated 50,000 tons of rock, concrete, lumber, and steel. Along the way he clashed with government officials over rules he saw as senseless, and he never charged admission.

Bishop died in November 2024 at age 80. His son Dan now looks after the castle, which still draws visitors every day and still runs on donations.

In this video, we climb through Bishop Castle and tell the story of the man behind it: the boy with the paper route, the dropout with the welding torch, and the stubborn builder who had the last laugh.