A National Historic Site and major Seattle tourist attraction, the Hiram M. Chittenden/Ballard Locks are fully operational ....always something to see and do.   The Locks are the busiest in the Nation in vessel traffic and also provide a unique opportunity to view migrating salmon from June through September.  In addition, there is a Visitor Center/Museum and world class botanical garden for just strolling, relaxing, picnics, summer concerts and weddings.