A National Historic Site, busiest locks in the Nation and major tourist
   attraction...open daily 24/7 for vessels, 7:00 am to 9:00 pm for visitors:

      - Watch large ships & small boats up close and personal

      - View migrating salmon from June through September

      - Tour the visitor center/museum and historic admin building

      - Stroll the world class botanical garden

      - Other activities include summer concerts, picnics and weddings.