Bullfrog Road Bridge

Alloway Creek is a 13.5-mile-long (21.7 km) tributary of the Monocacy River in Pennsylvania and Maryland in the United States. Via the Monocacy River, it is part of the Potomac River watershed.

The Starners Dam Bridge is a steel stringer bridge over Alloway Creek on Baptist Road in Taneytown, Carroll County, Maryland, USA. It is also called Alloway Creek Bridge.

Marsh Creek is a 26.6-mile-long (42.8 km) tributary of the Monocacy River in south-central Pennsylvania and north-central Maryland in the United States.Marsh Creek and Rock Creek join below Gettysburg and the Gettysburg Battlefield to form the Monocacy River. The height of land between Marsh and Rock creeks is the site of the Battle of Gettysburg.

The Mason and Dixon West Line Milestone Markers 76 and 77 are historic objects that are located in Frederick County, Maryland and Adams County, Pennsylvania, United States, near the community of Harney, Maryland. They are two of the original milestones that mark the Mason-Dixon line between the states of Maryland and Pennsylvania.They were listed on the National Register of Historic Places on August 21, 2018.

Horner House and Barn, also known as Alexander Horner House and Locust Grive Farm, is a historic home and barn located at Cumberland Township, Adams County, Pennsylvania. The house was built in 1819, and is a 2+1⁄2-story, five-bay vernacular Federal style dwelling. It has a main block and rear ell, and sits on an uncut fieldstone foundation. The bank barn was built in 1840. The barn has two levels and measures 100.5 by 50 ft (30.6 by 15.2 m). Also on the property is a contributing equipment barn, built in 1916, and an early 19th-century detached summer kitchen.It was listed on the National Register of Historic Places in 2007.

Harney (Monocacyville as late as 1892) is an unincorporated community in Carroll County, Maryland, United States. Harney is also the home of the 'World's Best Carnival'. It has been the home of the Harney Volunteer Fire Company since 1951.

Cumberland Township is a township in Adams County, Pennsylvania, United States. The population was 7,033 at the 2020 census. In 1863, the American Civil War Battle of Gettysburg took place mainly in Cumberland Township, which surrounds the borough of Gettysburg on three sides.

Spangler–Benner Farm is a historic farm and national historic district located at Mount Joy Township in Adams County, Pennsylvania. The district includes nine contributing buildings and two contributing structures. The contributing buildings are the sided log farmhouse (1870), frame bank barn (1864), log summer kitchen (1802), smoke house, spring house, wagon sheds, tools sheds, and machine shops. Contributing structures are a wooden silo and metal windmill, erected in 1900. The farm has been in continuous ownership by the same family since 1802.It was listed on the National Register of Historic Places in 1992.

Keefer–Brubaker Farm, also known as the Oscar Fogle Farm, is a historic home and farm complex located at Taneytown, Carroll County, Maryland. It consists of a two-story six-by-two-bay log-and-frame house which is partially encased in brick and rests on a rubble stone foundation Also on the property is a frame summer kitchen, a combination smokehouse/dry house, a frame springhouse, a shop building, a bank barn, a dairy, a hog pen, a tool shed, poultry house, and several more recent buildings. It is a representative example of a family farm complex which spans the period from the late 18th century to the mid 20th century.It was listed on the National Register of Historic Places in 2006.

Fairplay is a populated place in Adams County, Pennsylvania, United States. It is located between the Gettysburg Battlefield and the Mason–Dixon line at the intersection of U.S. Route 15 in Pennsylvania and the Emmitsburg Road near Marsh Creek, in Freedom Township. Moritz' Tavern at the intersection was the site of General John F. Reynolds' headquarters the night before the Battle of Gettysburg.