Tokyo City

Tokyo needs 4 days: Shibuya and Shinjuku (urban life) on one, Asakusa and Senso-ji Temple on another, Akihabara and Harajuku on the third, and an extra day for a fish market or theme park. March-May brings cherry blossom season, the city's most photographed event. It's expensive by Asian standards, though efficient public transport and quality street food help control the budget. It's the world's most populous metropolitan area, with over 37 million people, and its blend of cutting-edge technology and centuries-old tradition coexisting on the same blocks has no equivalent in any other metropolis.