Harding-Jones Paper Company District

South Middletown is a former census-designated place (CDP) in Lemon Township, Butler County, Ohio, United States. The population was 264 at the 2000 census. The area of South Middletown is now within the city limits of Middletown.

Hughes Manor, also known as White House Manor, located near Middletown, Ohio, was built in 1889. It was listed on the National Register of Historic Places in 1994.It was listed on the NRHP for its architecture. It includes Greek Revival, Stick/Eastlake, and Queen Anne architecture.The 10.5-acre (4.2 ha) listed area included 5 contributing buildings and one contributing structure. Historic functions served by its buildings include serving as a single dwelling, as a secondary structure, and as agricultural outbuildings.

LeSourdsville Lake Amusement Park was an amusement park located in Monroe, Ohio. Founded by Edgar Streifthau, the park originally opened in 1922 as a family picnic destination with swimming amenities. Throughout the 1940s, LeSourdsville Lake transformed into an amusement park with the addition of rides, attractions, and an arcade. The park was sold in 1961, and following heavy competition from nearby Kings Island, it was rebranded Americana Amusement Park in 1978. An electrical fire in 1990 caused over $5 million in damages and led to bankruptcy. The park continued to operate under several different owners before eventually closing in 1999. Americana briefly reopened in 2002 under the original name LeSourdsville Lake, but the effort by new owner Jerry Couch was short-lived as the park failed to turn a profit. Remaining rides and attractions were either sold or later demolished. In 2017, the city of Monroe received a portion of the land to build a city park and regional bicycle trail, and another portion was sold to a local vocational school seeking to build a new campus location.

Christian Ehresman Farm is a registered historic building near Trenton, Ohio, listed in the National Register on 1984-08-03.

John Augspurger Farm No. 1 is a registered historic building near Trenton, Ohio, listed in the National Register on 1984-08-03.

Lemon Township is one of thirteen townships in Butler County, Ohio, United States. Located in the northeastern part of the county, it includes most of the city of Monroe. It had a population of 16,885 at the 2020 census. It is the only Lemon Township statewide.

The Henry P. Deuscher House is a historic farmhouse in the countryside of the southwestern part of the U.S. state of Ohio. Located near the city of Trenton, it was originally home to one of the area's leading farmers, and it has been named a historic site.

South Main Street District is a historic district in Middletown, Ohio. It contains 76 contributing buildings, including single-dwelling, professional, and specialty store uses. The district was listed in the National Register of Historic Places in 1974. It includes the John B. Tytus House, which is a National Historic Landmark.

The John B. Tytus House is a historic house at 300 South Main Street in Middletown, Ohio, United States. Built in 1865,it was the home of John Butler Tytus (1875-1944), who invented a practical hot wide-strip continuous steel-rolling process that transformed the American steelmaking industry. The house was designated a National Historic Landmark in 1976 due to the efforts of Jeri and Pat Rossi, who bought the house in 1970. The house was the residence of the Rossi family until 2011.

Trenton is a city in northeastern Butler County, Ohio, United States, west of Middletown. The population was 13,021 at the 2020 census. It is part of the Cincinnati metropolitan area.

The Warren County Canal was a branch of the Miami and Erie Canal in southwestern Ohio about 20 miles (32 km) in length that connected the Warren County seat of Lebanon to the main canal at Middletown in the mid-19th century. Lebanon was at the crossroads of two major roads, the highway from Cincinnati to Columbus (later U.S. Route 42) and the road from Chillicothe to the College Township (Oxford), but Lebanon businessmen and civic leaders wanted better transportation facilities and successfully lobbied for their own canal, part of the canal fever of the first third of the 19th century. The Warren County Canal was never successful, operating less than a decade before the state abandoned it.

John Augspurger Farm No. 2 is a historic building near Trenton, Ohio, listed on the National Register of Historic Places in 1984. The two-story, rectangular farmhouse represents part of the grouping of the Amish Mennonites' settlement buildings. It is designed in the I-house style in an Amish house type and was built between 1846 and 1853.