I thought i'd post a little bit about the history of circleville ( this is from the circleville wiki)
Circleville was founded in 1810. It derived its name from the circular portion of a large Hopewell Culture earthwork upon which it was built. The original town plan integrated Circleville into the preexisting land with a street layout of concentric circles. An octagonal courthouse stood directly in the center.
Dissatisfaction rose with Circleville's layout, however, and in 1837, the Ohio General Assembly authorized the "Circleville Squaring Company" to convert it into a conventional grid. By 1856, this had been completed in several phases. No remaining traces of the original earthworks remain, though a few old buildings retain curved walls that were part of the original circular layout.
This is a picture of what used to be the Circleville library. It currently is (and has been used for many years) as Round Town Players , a local theatre where dramas and plays are done