 The tower for WIMZ-FM, located on the north side of the ridge is tall, making it the tallest man made structure in Tennessee It was the tallest structure in the world when it was completed in 1963.The second tallest tower is inches shorter than the WIMZ-FM tower, and is licensed by the Federal Communications Commission (FCC) as "Spectracite Tower Knoxville," built by Spectracite Towers, Inc.The structure is owned by American Tower, which leases it to WUOT-FM 91.9.