With a stay at Raintree's Sandcastle, you'll be centrally located in Blaine, just a 3-minute walk from Birch Bay Beach and 14 minutes by foot from Birch Bay State Park. This beach aparthotel is 0.8 mi (1.3 km) from Birch Bay Waterslides and 3.6 mi (5.7 km) from Semiahmoo Golf & Country Club.Be sure ...