My favorite Ameyoko (アメ横)!!! This is the place one must visit at least once while visiting in Tokyo. It's a busy market street between JR Okachimachi and Ueno Stations. 

You can experience Tokyo's "shitamachi" (real down to earth downtown district). The name "Ameyoko" comes from "Ameya Yokocho", meaning ameya=candy store and yokocho=side alley. “Ame" also stands for "America", because American products used to be available there for a black market after World War II. 

In Ameyoko, you can find amazing deals for all sorts of products like clothes, shoes, bags, cosmetics, jewelry, fresh fish, dried food, spices, candies (of course!) and much more. Most Ameyoko stores open 9:30am to 8pm. 

Ueno Park 上野公園 was established in 1873 and became the first public park in Japan. It is a large park/53,000 square meter plot which includes Ueno Zoo, Shinobazu Pond, the National Museum of Western Art, the Shitamachi Museum and many other sightseeing spots such as shrines, temples and gardens. You need a full day to see the entire park. And, a statue of Saigo Takamori, the famous general in the Battle of Ueno, stands near the park's southern entrance.

Video by Lifeisamt