Tokyo Metro Museum
This metro museum was opened in 1986. It is located underneath the elevated area of the Tokyo Metro Tozai Line’s Kasai Station. Admission tickets are purchased at a ticket machine like that which sells train tickets, and the entrance is designed to look like a ticket gate.
You can learn about the history of Tokyo's subway system and pick up a lot of interesting train-related knowledge here.
Sensoji Temple
This iconic destination in Asakusa sees as many as 30 million visitors each year. It stands as a well-loved mainstay in Tokyo, all while hosting a number of annual traditions like the first temple visit at New Years, Setsubun and more across the year.
It's so crowded that you can barely get in, and almost everyone there is a foreign tourist. It feels like it's lost the original downtown Tokyo atmosphere.