"Dogs (and cats, technically) are allowed on more than 100 miles of scenic trails at this Ohio park, which made 2021's list of top 10 most-visited national parks in the country. That includes the breathtaking trek to Brandywine Falls, the shaded rock formations of the Ledges Trail, and the 20 miles of the multi-use Towpath Trail that run through the park." - Travel + Leisure Editors