Crystal Springs was founded in 1950 as a rhododendron test garden. Today, the park boasts more than 2,500 rhododendrons, azaleas and other plants spread across 9.5 acres. Small placards identify the flora for visitors, and self-guided tour booklets are available on-site.One of Portland’s best waterfowl-watching spots, the garden is home to nearly 100 types of birds and other wildlife. The first weekend in April is the Early Show with several hundred trusses of early blooming rhododendrons. A $5 admission fee is charged between 10:00am-6:00pm, Tuesday through Sunday, March 1, through September 30. No admission fee on Mondays. Entrance, parking, major trails, and restrooms are all wheelchair accessible.