David Longwell House

Bethel African Methodist Episcopal Church of Monongahela City is a historic church at the junction of 7th and Main Streets in Monongahela City, Pennsylvania. It was built in 1871 and added to the National Register in 2002.It is a brick Gothic Revival style building, one of about five Gothic Revival buildings in the city.It is designated as a historic public landmark by the Washington County History & Landmarks Foundation.

The Edward G. Acheson House is a historic house at 908 West Main St. in Monongahela, Washington County, Pennsylvania, United States. Probably built about 1870, it is notable as the home of Edward G. Acheson (1856-1931), the inventor of carborundum, and as the likely site of its invention. It was designated a National Historic Landmark in 1976.

Monongahela, referred to locally as Mon City, is a third class city in Washington County, Pennsylvania, United States. The population was 4,149 at the 2020 census. It is part of the Pittsburgh metropolitan area, about 17 miles (27 km) south of Pittsburgh proper. The city of Monongahela sits at a location where several locally important Pennsylvania state routes meet: a concurrency between Pennsylvania routes 88, 136, and 837 makes up most of the length of the city's Main Street, and the city's Park Avenue carries Pennsylvania route 481 to its northern terminus at Main Street. Monongahela is one of just two cities in Washington County, and is the second smallest city in Pennsylvania (after Parker). The town is served by the Ringgold School District.

The Monongahela Cemetery is an historic rural cemetery in Monongahela, Pennsylvania that was established in 1863. Landscape architects Hare & Hare designed a portion of the property.

The Monongahela City Bridge, officially known as the General Carl E. Vuono Bridge, spans the Monongahela River from the City of Monongahela in Washington County, Pennsylvania to Forward Township in Allegheny County, Pennsylvania. It was built to replace a bridge that was situated one-quarter of a mile north of the current bridge's location at First and Main Streets.

Ringgold School District is a midsized, suburban, public school district located in the northeastern corner of Washington County, Pennsylvania, south of Pittsburgh. The district encompasses 58 square miles, including the city of Monongahela, the boroughs of Donora, New Eagle and Finleyville, and the townships of Carroll, Union, and Nottingham. According to 2000 federal census data, it served a resident population of 26,933. The area is a mix of Pittsburgh suburbia and rural areas. The district includes a combination of two former high schools from the area. Monongahela and Donora both had their own junior and senior high schools. These building were sold in 2013 and no longer being used in the district. The current high school was built in 1979. Ringgold School District operates four schools: Ringgold High School, Ringgold Elementary School South and Ringgold Middle School in Carroll Township and Ringgold Elementary School North in Union Township. Ringgold built a new middle school next to the current high school. It opened for the 2017–18 school year and cost $45 million. Construction started in November 2015 and finished in October 2016.

New Eagle is a borough in Washington County, Pennsylvania, United States and is part of the Pittsburgh Metro Area. The population was 2,047 at the 2020 census.

Carroll Township is a township in Washington County, Pennsylvania, United States. The population was 5,381 at the 2020 census.

Baidland is a census-designated place (CDP) in Washington County, Pennsylvania, United States. The population was 1,563 at the 2010 census.

Bunola is an unincorporated community in Allegheny County, Pennsylvania, United States. The community is located along the Monongahela River, 14.2 miles (22.9 km) south of Pittsburgh. Bunola has a post office with ZIP code 15020, which opened on May 26, 1888.

Courtney is a Village of the township of Union in Washington County, Pennsylvania, United States.

Hazel Kirk is an unincorporated community and coal town located in Washington County, in the southwestern corner of the U.S. state of Pennsylvania. Hazel Kirk was part of Carroll Township and was the location of four bituminous coal mines, known as "Hazel Kirk Mine," "Hazel Kirk No. 1," "Hazel Kirk No. 2," and "Hazel Kirk No. 3."