Washington Museum & Tourist Information Center Once the site of Plonsky's Opera House, the museum contains memorabilia from Washington's Steamboat days. Information is available on significant sites in the town and other places of interest. 404 North Main Street Washington, Louisiana 70589 Phone: 337.826.3627 Hours: Open 7 days a week: 9:00 - 12:00 a.m. and 1:00 - 4:00 p.m. Admission is free to everyone Parking is free