Underground bicycle parking systems in Tokyo, known as Eco Cycle, offer a solution to the problem of crowded sidewalks and illegal bike parking. These subterranean facilities store bikes efficiently and protect them from theft and rain. Cyclists can store or retrieve their bikes in just eight seconds using a smart card and locator device. With 50 stations already in Japan, the Eco Cycle concept may expand globally. However, skeptics express concerns about accessibility during emergencies. Overall, these underground parking systems promote cycling and free up space on Tokyo’s streets.