Peace Arch Provincial Park is a 22-acre park commemorating the Treaty of Ghent from the War of 1812. A giant commemorative, concrete arch straddles the border of Canada and the United States. The 67-foot Peace Arch is jointly maintained by the two countries.

Sam Hill, a prominent American businessman, conceived the idea of the Arch to mark the War of 1812 treaty. Financed and built by Sam, the arch was initially known as Sam's Peace Arch. Designed by Augustus Warren Gould of Gould and Champney, construction began in 1920. The Peace Arch was fitted with two iron gates, left open to symbolize peace between the two great nations, and dedicated on 6 September 1921. Sam laid a hollow cornerstone within which he placed a hammered steel box made from a captured slave ship. Inside the box, he placed a piece of the Beaver and Mayflower. 

The Peace Arch was a vision Sam shared with his Canadian friend, former Mayor of Victoria British Columbia, Alfred Todd. Alfred recognized the ties between the United States and Canada were not just different, but exceptional. The two partnered for more than seven years to memorialize this harmony with an arch that would serve as a portal of peace between the two nations. 

The lands around the Arch were acquired through donations and fundraising efforts. Two decades later, on November 7, 1939, the Peace Arch and surrounding lands on the Canadian side were officially dedicated as Peace Arch Provincial Park. The flower garden in the parks is in the shape of the Canadian flag.