The Bellevue Botanical Garden is open dawn until dusk every day of the year, including all holidays. Admission is free. Visit our website for additional information. The Bellevue Botanical Garden is an urban refuge encompassing 53 acres of cultivated gardens, restored woodlands, and natural wetlands. We opened to the public in 1992 as a 36-acre Botanical Garden located in the heart of Bellevue, Washington. Since then, the Bellevue Botanical Garden has grown to 53 acres, with a vibrant adult and children’s education program, popular annual events, and 425,000 annual visitors. The Bellevue Botanical Garden relies on the support of the community, as members, donors, and volunteers, to help the Garden continue to thrive.