The latest ZOOM Urban Lesbian Excursions event is this three-hour tour on the Potomac, offering views of the monuments from every angle aboard the American Spirit, an amazing replica of a historic 1800s schooner. Vocalist Angie Head will offer “Sunset Serenade,” Phillip’s Seafood will provide hors d’oeuvres and Marvin’s DC will furnish white wine and light ale. Saturday, Sept. 5, at 8 p.m. Gangplank Marina, 600 Water St. SW. Cover is $50. Visit www.zoomexcursions.com.