//
Photo: James Abbott from New Westminster, B.C., Canada, CC BY 2.0 via Wikimedia Commons
Birch Bay State Park is a 225.1-acre (91.1 ha) Washington state park located nine miles (14 km) south of Blaine in Whatcom County, within the town of Birch Bay. The park has 7,915 feet (2,412 m) of saltwater shoreline on Birch Bay and 15,000 feet (4,600 m) of freshwater shoreline along Terrell Creek. Recreational opportunities include camping, picnicking, fishing, hiking, crabbing, clamming, and boating.
© OpenStreetMap contributors
A grand white arch in a grassy lawn marks the US-Canada international border. On either side of the park are frequently lines of cars crawling slowly through the border checkpoint lines. You can enter the park from either the US or Canadian side, and walk all around it, but you must leave by the side you entered, or else formally pass through the border checkpoint.