The "NTV Big Clock concept design by Hayao Miyazaki" (mechanical clock) is on the wall of the Nippon Television Head Office Building in Shiodome, and is covered in copper plates hammered by hand, measuring 12m in height and 18m in width. It is one of Japan's largest mechanical clocks, with 32 mechanisms scattered throughout it that work together to create a story. It started with a single sketch and took about four years to complete. Characters that control "sound" and characters that control "movement" live inside the clock, and the entire clock creates a song. The melody played by this clock lasts for about three minutes, and is played several times a day, resonating throughout Shiodome. NTV Big Clock concept design by Hayao Miyazaki Homepage Areas of responsibility: design, layout, Production and construction, Research and planning