Japan's Koreatown that's a bit sketchy but has a ton of great food and cheap cosmetics.

​

Take an elevator to the top and see all of Tokyo!

Japan's gay district. 

If you like busy places then it's a good place to go shopping.

​

A bit more upscale with lots of good department stores and restaurants.

​

*It's good to remember the kanji for Shinjuku because it comes up a lot in places.