Office workers, tourists and locals all pass under the neon lights of Shinjuku. For the best views of the area, head to the Tokyo Metropolitan Government Building’s free observation tower. Then wander through the sub-neighborhood of Kabukicho, one of the city’s busiest entertainment and red-light districts, or relax in Shinjuku Gyoen National Garden, a peaceful spot famous for its cherry trees.
In the evening, you can enjoy Tokyo’s street food scene at Memory Lane, an alley that runs behind Shinjuku Station and is packed with little stalls selling yakitori skewers and steaming bowls of ramen. Alternatively, join a nightlife tour to enjoy local izakayas or go bar hopping with a guide who can help you find the best spots and tell you what to order.