The Peace Arch is a gateway-type monument situated on the border between the United States and Canada, between the communities of Blaine, Washington and White Rock, British Columbia. The Peace Arch, standing 20.5 metres tall, was dedicated in September of 1921, and symbolizes the ongoing peace between the two countries that meet at its location. The monument can be seen from the west edge of the transition between Interstate 5 and B.C. Highway 99. The Peace Arch has the flags of the U.S. and Canada mounted on its crown, and two inscriptions on both sides of its frieze. The inscription on the U.S. side of the Peace Arch reads "Children of a common mother", and the words on the Canadian side read "Brethren together in unity".