Cherry Blossom Riverboat Cruise on the Potomac. Delight in a 50-minute cherry blossom cruise in Washington DC during the National Cherry Blossom Festival. Hear onboard narration about postcard-perfect DC sights surrounded by a delicate spray of pink and white cherry blossoms. Cruise down the Potomac River and catch sight of the Lincoln Memorial, Jefferson Memorial, Washington Monument and more. Select a weekday morning and afternoon departure from Georgetown’s Washington Harbour. Book and Save 12% Off Cherry Blossom Riverboat Cruise on the Potomac.