Free Timeshare for Sale: Located in Birth Bay, Washington, the Raintree Sandcastle at Birch Bay is the perfect place to stay for a relaxing and peaceful getaway. The resort features an outdoor heated pool, a hot tub, fitness center, bicycle rentals and more. There are also a wide variety of local attractions to choose from including Birch Bay State Park, Birch Bay Waterslides, and Semiahmoo Park. You can also experience some northwestern cuisine at Drayton Harbor Oyster Company or Peace Arch City Cafe and Bar. The Raintree Sandcastle puts your comfort first and is guaranteed to provide you with a fantastic experience.