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The machine rooms at the foot of both arches of the bridge. These are a reminder of good old days when the cars were stopped to open and close the arches. Kachidoki Bridge is a bascule bridge, which is rare in Japan, and has been closed since 1970. A long time ago, many people gathered to see the big iron arches moving.

The quantities of fruits, vegetables, and flowers distributed here are also the biggest! Visitors can take a look at hi-tech bidding of flowers introduced in Japan for the first time.

One of Japan's largest water reclamation center known for biomass power generation.There is a biotope where you can clearly see symbiosis between animals and plants.

Japan's first modern sewage treatment facility started its operation in 1922.The former main pump house is a red brick building, which reminds of the train station in Europe. The house and surrounding facilities were designated as tangible cultural properties by the Tokyo metropolitan government.

The street in front of Kaigakan is the oldest asphalt pavement in Japan. The street is lined with maidenhair trees, whose leaves show beautiful autumn colour every year. Aoyama cemetery is the first park cemetery in Japan, where celebrities and a famous faithful dog called Hachi sleep quietly. This place is also famous for cherry trees. Roppongi Tunnel is a space where the visitors can enjoy art of modern Tokyo. The wall is colorfully painted by young artists.

This is the biggest reservoirs for exclusive use of water service and the first dam in Tokyo. People can enjoy a leisurely stroll around the water source forest near the dam.

You can recognize how much important safety and welfare are when you visit Tachikawa Bosaikan. Let's have the experience of the earthquake as same as the Great Hanshin Awaji Earthquake and the Great Kanto Earthquake.

The first real wind power generation in Tokyo, which is very rare in the world. Energy generated from Tokyo's Salt Breezes.

The retro tower is a symbol of modernization. A witness of the times, still in full operation.

Tamagawa Josui supported the prosperity of Edo era. You can enjoy strolling and viewing Edo's canal. Medical Plant Garden is the only place in Tokyo that you can see poppies, which are prohibited to grow.

New college town that flourishes around university.

The Toden Arakawa Line has been the most appreciated and most commonly used as the "means of transportation for people in Tokyo" ever since it was started in 1911. Nowadays the "eco-friendly means of transportation" draws renewed attention.

Goods distribution base supporting urban life. The port supporting our life is responsible for not only passengers and goods but also thoughts and feelings of people.