This preserve features a mosaic landscape of oak woodlands and wetlands, including an outstanding example of an Illinois glacial lake for which the site is named.

Due to the delicate and unstable nature of the shoreline, access to Sun Lake itself is not possible or permitted.

A footbridge and 3.25 miles of gravel trails provide access for hiking, bicycling, cross-country skiing, and nature and wildlife observation.

Please keep dogs leashed and on trails at all times, and pick up after them. Learn about our off-leash Dog Parks (permit required).

Three spurs connect the main trail to a residential community, the Lake Villa Baseball Park and Longwood Centre Park, home to the historic Lehmann Mansion.