At the southern end of Edogawa Ward, Kasai Rinkai Koen Seaside Park dips its toes in the Pacific Ocean. From there, it's possible to see Tokyo Disney Resort across the water in Urayasu.

Mickey's place packs all its entertainments in one tidy mouse nest, but Edogawa offers many similar attractions at a fraction of the cost. The hitch is that you have to haul all around the ward — Tokyo's fourth largest — to find them.

Kasai Rinkai is the perfect place to start. Built on reclaimed land, the park offers refuge to flocks of shore birds, and its wide stretch of mud flats trap the occasional stingray. Children can dig for clams and crabs on one of the park's pair of artificial, crescent-shaped islands that, like a little mermaid's bra, hold Tokyo Bay in check.