A tiny former ferry—the m/v Fremont Avenue—takes 50-minute spins around Lake Union, a glacial-gouged body of fresh water the size of Monaco. A cruise reveals gorgeous views of the Space Needle and Seattle's skyline, as well as the rusted splendor of the world’s last remaining synthetic-gas plant, now a postindustrial play space for picnics and kite-flying. Quirky narration highlights more hidden sights, like the studio of world-renowned glass artist Dale Chihuly and its birdhouses shaped like vintage RVs. Bring cash or checks for the $12 ticket and $2–$4 treats. Well-behaved, leashed pets are welcome, too!