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All Nature Sites in Princeton

  • Old Indian Boundary Line Prairie

    Established in 1816, Illinois’ Old Indian Boundary Line ran from the southern tip of Lake Michigan down to the Rock River’s confluence with the Mississippi River. In 1982, a decision was made to restore a 7-acre parcel of land along SR 26 back to native tallgrass prairie habitat. Today, the Read more [...]

  • Red Covered Bridge

    Located just 1 ½ miles north of Princeton on Route 26 is the Red Covered Bridge, built in 1863 and later rehabilitated in 1973. It is one of only five remaining covered bridges in Illinois and still open to traffic. It crosses Big Bureau Creek and was once part of Read more [...]

  • Warnecke Woods

    Warnecke Woods is a 33.5-acre botanical gem that was donated to the Bureau County Natural Resources Conservation Service District in 1984 by Marie Warnecke. Ecologically, the site is a mix of rare black oak/black maple savannah, swampy floodplain forest dominated by swamp white oak, and abandoned agricultural land which is Read more [...]