Offering views of Tokyo’s waterfront including the Rainbow Bridge, Odaiba Marine Park (Odaiba Kaihin-Koen in Japanese) is a popular summer spot to relax. The boat harbour offers amphibious buses and there is a beach area with grassy pathways and statues.

The area hosted both the Olympic and Paralympic Triathlons and the 10km Marathon Swim. The park is easily accessible from Daiba and Odaiba-Kaihinkoen Stations on the Yurikamome line and from Tokyo Teleport Station on the Rinkai Line.