Odaiba is a large artificial island in Tokyo Bay, developed initially for defensive purposes in the 19th century. It later evolved into a commercial and leisure district, connected to central Tokyo by the Rainbow Bridge and the Yurikamome transit line. The area features shopping centres, entertainment complexes, and exhibition venues. It also hosts corporate headquarters and media studios. Odaiba has played a role in urban redevelopment and is known for its modern architecture and waterfront views.