1. Gawp at the temples of Sensoji
You'll be dodging busloads of tourists as you wander round the buildings, statues and gardens at Sensoji, but it's worth the effort. The city's oldest temple and Shinto shrine are accessed via the impressive "Thunder Gate" with its enormous paper lantern. Dozens of shops and restaurants line the approach roads to the temple, so it's also a place to stock up on gifts and snacks.
2. Grab some fresh air out of town
Escaping Tokyo's frenetic streets, even for a few hours, is highly recommended - and if you're on a short visit to Japan, you should make a quick out-of-town escape to get a sense of the country's quieter side. Day trips to Kamakura are popular; surrounded by forests, this picturesque town is home to a number of temples and a towering buddha statue. Easily accessible by train or bus, its sense of calm in comparison to the madness of Shinjuku is striking. Another easy trip is to Hakone, an oceanside area renowned for its seafood and hot springs.
3. Take a history lesson
Gain an understanding of Japan by visiting the hugely impressive Tokyo National Museum where more than 100,000 treasures from the past await your browsing. After checking out the collections, be sure to stroll in the relaxing Ueno Park, where the building is situated.
4. Experience palace life
Japan's Imperial Family hang out at the Imperial Palace, where imposing buildings and picturesque gardens make for many a prime photo opportunity. Much of the complex is off-limits to visitors but the accessible sections more than merit the effort.
5. Re-live a modern classic
Dress up, head for the suave New York Bar atop the Park Hyatt hotel, and you'll be retracing the steps of Bill Murray in Lost In Translation. Whether or not you've even seen the movie, the bar affords dizzying skyscraper views as good as anywhere in the city. And the cocktails are ace.
Next: Transport, hotels and other Tokyo practicalities...