Fodor's Expert Review Seattle City Light Information and Tour Center
Based at a history museum that has exhibits about the onset of electric power through the Cascade ranges, Seattle's public electric company offers tours and programs during summer. Several trails start at the building, and the group offers sightseeing excursions on Diablo Lake in partnership with the North Cascades Institute, Thursday through Monday in summer by advance reservation, and afternoon cruises on summer weekends. The tour includes a visit to the Diablo Dam. Free 45-minute walking tours through the historic town of Newhalem are offered daily from July through Labor Day.