Humbard’s Folly is an unfinished concrete tower in Cuyahoga Falls, Ohio, originally envisioned by televangelist Rex Humbard as part of his grand Cathedral of Tomorrow complex. Construction began in 1971, inspired by towers like the one in Calgary, with plans for a rotating restaurant and a TV broadcast antenna. The tower rapidly rose to about 494 feet in just over three weeks, but work abruptly stopped due to financial issues and federal scrutiny over unregistered bonds. The Securities and Exchange Commission's intervention forced Humbard to halt the project, leaving the tower incomplete and without its intended amenities. Originally planned to reach 750 feet, the structure never exceeded its half-finished state. Locals dubbed it with humorous nicknames such as “Humbard’s Folly” and “Rex’s Erection,” reflecting the mixture of awe and skepticism it inspired. In the late 1980s, the tower was purchased at a sheriff’s sale and repurposed for cellular communications, giving it a modest second life. Though it never became the tourist attraction Humbard imagined, it remains a prominent and somewhat mysterious feature of the local skyline. Occasionally, ideas resurface about finishing or reimagining the structure, but none have gained traction. Today, it stands as a peculiar symbol of unfulfilled ambition and the bold, eccentric vision that once captured Cuyahoga Falls' attention.