The historical site of Edo which floats on this Tokyo Bay is currently popular among the people. It is a leisure spot that takes advantage the waterfront and is called “Odaiba Marine Park.” During the Edo era, Japan chose to isolate itself by restricting trade with foreign countries. Having been threatened by the fleet of Admiral Matthew Perry who sailed into Uraga with a message from the president of the United States demanding Japan open itself to trade with foreign countries in 1853, the Edo Bakufu government set up cannons off the coast of Shinagawa. That is the “Odaiba” that remains today.