Colmar Manor, Maryland

Cottage City, officially the Town of Cottage City, is a town in Prince George's County, Maryland, United States. Per the 2020 census, the population was 1,335. Cottage City is a small, quiet community lying between Eastern Avenue (the border with Washington), Brentwood, Colmar Manor, and the Anacostia River. Cottage City was developed, beginning in 1870, under the name of "The Highlands". The area was incorporated in 1924 as Cottage City.

The Bladensburg Road Bridge is a bridge that carries U.S. Route 1 Alternate (US 1 Alt.; Bladensburg Road) over the Anacostia River between the communities of Colmar Manor and Bladensburg in the U.S. state of Maryland.

Dueling Creek is a tributary of the Anacostia River in southern Maryland in the United States, located in the town of Colmar Manor.The Bladensburg Dueling Grounds on the creek was a favorite spot for duels in the 19th Century, and was the site of a duel between Stephen Decatur and James Barron.

The Bladensburg Park Pedestrian Bridge is a bicycle and pedestrian bridge over the Anacostia River in the U.S. state of Maryland. The bridge lies between the communities of Colmar Manor and Bladensburg. The bridge was completed in 2005 using a bowstring truss design.

The Peace Cross is a World War I memorial located in Bladensburg, Maryland. Standing 40 feet (12 m) in height, the large cross, is made of tan concrete with exposed pink granite aggregate; the arms of the cross are supported by unadorned concrete arches. Erected by 1925 in the memory of 49 local servicemen from Prince George's County who died during World War I, the base of the cross displays the words "valor," "endurance," "courage," and "devotion" as well as a bronze tablet listing the names of those lost in combat. The memorial was originally commissioned by the American Legion, but since turned over to be maintained by a commission within Maryland. This created an apparent conflict with the separation of church and state, and led to the Supreme Court case American Legion v. American Humanist Association in 2019 which decided the monument was built for secular purposes and had historical importance beyond the Christian symbolism, so there was no conflict for the state to maintain the monument.

The George Washington House, or Indian Queen Tavern, is located at Baltimore Avenue, at Upshur Street, in Bladensburg, Prince George's County, Maryland. It was constructed in the 1760s. The 2+1⁄2-story structure is constructed of brick Flemish bond on ends. The plan is rectangular, with a gabled roof, exterior end chimneys, gabled shingled dormers. There are first and second-story center entrances, each with a transom. There is a full-width one-story porch with balustraded deck and side entrances. The structure includes a later two-story rear addition. The structure is Georgian.It represents the last remnant of a social and commercial complex established in the 1760s by Jacob Wirt, whose son William Wirt later became U.S. Attorney General and an 1832 presidential candidate. The Indian Queen Tavern gained its reputation as the "George Washington House" through an assumption that "George Washington slept here." Research in primary sources has shown that the extant structure was never a tavern during Washington's lifetime, although it is possible that he stayed in the frame Indian Queen Tavern formerly located next to the present structure. The brick tavern began to be known as the "George Washington House" before 1878 when it was being used as a hotel. The structure also housed Jacob Coxey's "army" of unemployed during an 1894 march on Washington, D.C. to demand relief. It now serves as headquarters for the Anacostia Watershed Society. It was listed on the National Register of Historic Places in 1974.

Northeast Branch Anacostia River is a 3.2-mile-long (5.1 km) free-flowing stream in Prince George's County, Maryland. It is a tributary of the Anacostia River, which flows to the Potomac River and the Chesapeake Bay.

Northwest Branch Anacostia River is a 21.5-mile-long (34.6 km) free-flowing stream in Montgomery County and Prince George's County, Maryland. It is a tributary of the Anacostia River, which flows to the Potomac River and the Chesapeake Bay.

The Battle of Bladensburg was a battle of the Chesapeake Campaign during the War of 1812, fought on 24 August 1814, at Bladensburg, Maryland, 8.6 miles (13.8 km) northeast of Washington, D.C. Called "the greatest disgrace ever dealt to American arms," a British force of army regulars and Royal Marines routed a combined U.S. force of Regular Army and state militia troops. The American defeat resulted in the capture and burning of the national capital of Washington, D.C., the only time that the city fell to a foreign invader.

The William Hilleary House, or Hilleary-Magruder House, is a historic home located at Bladensburg in Prince George's County, Maryland, United States. The house is the only 18th-century stone, gambrel-roofed house in Prince George's County. It is now surrounded to the south and west by an exit ramp connecting Kenilworth Avenue with Annapolis Road.It was built between 1742 and 1764 by William Hilleary. The house passed through a number of 18th-century owners, including Richard Henderson. Henderson was a prominent merchant and land speculator, who served as a County Justice and was well known for his "paper wars" in local newspapers. George Washington's diary, May 9, 1787, states that he dined at Richard Henderson's in Bladensburgh. Henderson sold the property in 1793 to Major David Ross, son of the surgeon and merchant Dr. David Ross who had died in 1777–8 ?, as well as business partner of Henderson's in the Frederick Forge on Antietam Creek. Ross' father, Dr. David Ross, was the "Agent Victualer" for the Maryland troops during the French and Indian war. Father Dr. David Ross owned the famed "Ross Home", which was often referred to as the old brick hospital. In August 1814, the Ross Home was used for a hospital during the Battle of Bladensburg of the War of 1812. Dr. Ross was an original inhabitant of Bladensburg, had served as a Town Commissioner, and from 1750 to 1759 had been a Justice of the County Court. The William Hilleary House was listed on the National Register of Historic Places in 1978. In 1979 Prince George's Heritage, Inc., took on the ownership and restoration of the Hilleary-Magruder House.

Bladensburg Dueling Grounds is a small spit of land, a fraction of its original size, along Dueling Creek, formerly in the town of Bladensburg, Maryland, and now within the town of Colmar Manor, just to the northeast of Washington, D.C., United States. Dueling Creek, formerly known as '"Blood Run" and "The Dark and Bloody Grounds", is a tributary of the Anacostia River, which was formerly, called the East Branch Potomac River. From 1808 the grove witnessed approximately fifty duels by gentlemen, military officers, and politicians, settling "affairs of honor". A formalized set of rules and etiquette, the code duello was usually enforced by the duelers and their seconds. The exact number of duels and the names of all the participants who fought at Bladensburg may never be known because surviving records are obscure, the events are not well documented - and dueling was illegal. Following the Civil War, dueling fell out of favor as a means of settling personal grievances and declined rapidly; the last known duel was fought here in 1868.

The Market Master's House is an 18th-century vernacular Colonial-era stone dwelling with 20th-century additions, set at the rear of a long, narrow lot in Bladensburg, Prince George's County, Maryland. It was constructed c. 1765, when Bladensburg was an active tobacco shipping port.The Market Master's House is significant for its association with the 18th century development of the town of Bladensburg. Lot 38 of Bladensburg was purchased by Christopher Lowndes, who built nearby Bostwick, on September 23, 1760. The use of the Market Master's House as a headquarters for tobacco inspectors or an overseer of tobacco marketing activity has not been proven, and no description of an approved Market Master has been found for the town of Bladensburg. However, the Market Master's House is one of only four buildings remaining from this significant period of the town's history.The original block is a two-by-one bay, gable-roofed, 25 × 20 foot structure, 11⁄2 stories, of randomly laid roughly shaped non-native stone. The stone is thought to have been brought to the site originally as ship ballast, therefore it is also known as the Ship's Ballast House. It contains one room on the first story, a corner stair, and one room on the second story. A small two-story west kitchen addition and one-story south shed-roofed addition were added about 1920, with later additions and renovations completed in 1956. In May - June 2009, the Maryland State Highway Administration and the Center for Heritage Resource Studies (CHRS) at the University of Maryland, College Park sponsored archeological digs at the site.It was listed on the National Register of Historic Places in 1990.