Rombach Place, located in Wilmington, Clinton County, Ohio, is a prominent historic residence of exceptional architectural and local historical significance. Originally constructed circa 1831, the two-story brick mansion underwent substantial expansions in the mid-to-late 19th century, resulting in its elegant Greek Revival and Italianate appearance. The building showcases classic Italianate details, including a low-pitched hip roof, ornamental bracketed cornices, elongated sash windows with decorative hoodmolds, and a gracious front porch. The home's stately design reflects the high social standing and prosperity of its residents, serving as an outstanding example of 19th-century residential architecture in the region.

Historically, Rombach Place is most famous as the home of General James W. Denver, a prominent 19th-century lawyer, politician, Union Army general, and Governor of the Kansas Territory, for whom the city of Denver, Colorado, was named. Denver married Louise Rombach, whose family had established the estate, and the property served as the family's primary seat during his influential political career. Listed on the National Register of Historic Places in 1979, the mansion now serves as the headquarters and museum for the Clinton County Historical Society, preserving a vast collection of local history, genealogical records, and Denver family artifacts for the public.