Oak Openings Preserve Metropark is a nature preserve located in Swanton Township, Ohio, owned and operated by Metroparks Toledo. Most of the park is an oak savanna ecosystem, characterized by alternating wetland and vegetated dunes. The park hosts the Beuhner Center, an interactive nature center. There are over fifty miles of trails in Oak Openings Preserve. The park gets its name from the region in which it is located. Oak Openings Preserve lies within the larger Oak Openings Region.