Originally, I have not planned to visit Tokyo Metro Museum, even I have not hearted the name of Tokyo Metro Museum in just 2 hours before I entered the museum. On 1st May, all my planned outdoor itinerary was disturbed by adverse weather. When I searched in google, I found the Tokyo Metro Museum which just next to Kasai Station of Tokyo Metro Tozai Line. The Tokyo Metro Museum is established in July 1986 which owned by a non-profitable organization “Metro Cultural Foundation”. It is worth for enthusiast of transportations to visit the museum. Although the scale of Tokyo Metro Museum is much smaller than The Railway Station in Omiya, Saitama, the content of Tokyo Metro Museum is still enough for me to explore in a full afternoon.