[2] Haymarket is built on land that used to be hunting grounds of the western Iroquois nations, who came from the New York and Pennsylvania area around the Great Lakes.

They used hunting paths through the land until 1722, when they made a treaty with the colonies of Virginia and New York to move into the Blue Ridge Mountain region.

The town of Haymarket began to be developed and built after the American Revolutionary War, formally founded in 1799 on the land of William Skinker.

The Virginia General Assembly gave Skinker the rights to lay out the town, which he drew to consist of 13 streets and 140 lots.

Shortly after, a clerk's office and jail were constructed in 1801, as the town had been selected as the site of what is now a district court.

During the Civil War, on November 4, 1862, Union troops invaded Haymarket and set the entire town on fire.

They had been convicted of the murder of a girl and sentenced to death, but the mob thought the legal system moved too slowly.

Being connected to the interstate, during a period of growth in the Northern Virginia region, has produced a population boom in the area of suburban development.

[11] Local resistance to the resort, because of perceived adverse effects on the Manassas Battlefield, resulted in the defeat of the park.

[13] Snyder, in turn, sold off most of the land to developers, except for the 405 acres (1.64 km2) donated to the National Capital Area Council of the Boy Scouts of America.

Atlas, and Old Town Hall and School are listed on the National Register of Historic Places.

[17] Haymarket is located in the Piedmont region of Virginia, sitting at the base of Bull Run Mountains.

[citation needed] Geographically, Haymarket serves as a marker to show the start of Virginia outside of the "NOVA" region.

[citation needed] According to the United States Census Bureau, the town has a total area of 0.6 square miles (1.5 km2), all of it land.

This park spans over 230 acres and features a 23-acre lake, which is fed by the Little Bull Run and is open to fishing and non-motorized boats.

[26] The history of winemaking in Prince William County dates back to the 1800s and early 1900s, when several wineries were in operation.