Ever wonder what a lived-in floating boat looks like on the inside? Well, here's your chance to sneak a peek. Twenty-three houseboats, housebarges, cabin cruisers, tugs and more will be open for touring this weekend. A 60-minute Potomac cruise can be added on to complete the waterfront experience. Proceeds benefit the Alice Ferguson Foundation and Earth Conservation Corps. Tour the floating residences on the Washington Channel. Saturday, Aug. 13, from 10 a.m. to 2 p.m. Gangplank Marina, 600 Water St. SW. Tickets are $11, or $25 with a DC Harbor Cruises cruise. Visit dchouseboat.org for more information.