Frog Hollow takes its name from the marshy conditions in the low land near what is now the corner of Broad and Ward Streets.

The neighbor-hood was originally developed as three- and six-family buildings to house the immigrant population who worked in the factories which lined Capitol Avenue. The Park River, now underground, once was used as a source of water power by the factories. An inlet of the Park River Tunnel lies near Pope Park, providing an entry point for tunnel explorations by urban speleologists.