The Leaning Tower of Niles is a half-size replica of the Leaning Tower of Pisa. Located in Niles, Illinois, it was completed in 1934 by industrialist Robert Ilg as part of a recreation park for employees of the Ilg Hot Air Electric Ventilating Company of Chicago. It is situated at 6300 W. Touhy Avenue.
Some speculate that part of the motivation to construct the tower was to celebrate the 600th anniversary of the Leaning Tower of Pisa. A more likely explanation is its original functional purpose, to store water for outdoor recreational swimming pools. In 1960, the descendants of Robert Ilg donated part of the park for the construction of the Leaning Tower YMCA.
The Leaning Tower of Niles contains five bells. Three of the bells are thought to be several hundred years old, and to have been cast in Italy. How they came to be included in the tower is not known. The Leaning Tower Plaza area now has four fountains and a 30-foot pool.
The tower was listed on the National Register of Historic Places in 2020.