If you’re looking for a day trip that will offer more than just a glimpse of the natural world, take a visit to Olentangy Caverns. This fascinating attraction is home to more than 25 miles of passageways, chambers, and rooms and is one of the largest limestone caves in the United States. You can explore it on your own or join a guided tour that takes you through the various sections. even if you’re not interested in caves, the landscape around Olentangy Caverns is beautiful and well worth a visit.