Shinagawa Aquarium
The best part of this aquarium in southwestern Tokyo's Shinagawa-ku Residents' Park is walking through a 72-foot underwater glass tunnel while some 450 species of fish swim around and above you. Do your best to avoid weekends, when the dolphin and sea lion shows draw throngs in impossible numbers. As for bilingual signage, don't expect much, save, unironically, for the ticket machines.