The complex includes three buildings, the Main building Number One, the building Number Two and the Metropolitan Assembly Building, all built between 1988 and 1991, designed by the famous Japanese architect Kenzo Tange. Among them, the most spectacular (and the main tourist attraction) is the Main building Number One, the two towers skyscraper (243 meters tall, 48 floors, 2nd place in the Top 10 Tokyo Skyscrapers), here in the center of this photo.
Its design combines old and new architectural concepts: the two towers are said to make the building look like a Gothic cathedral, while the facade is decorated with motifs suggesting the microchips which, at the time of construction, were defining the electronics industry.
Travel tip: Regarding the touristic aspect, I think that Tochō is a must visit in Tokyo. Not only because it is an impressive architectural complex, and not only because from its towers you will enjoy some of the most beautiful views over Tokyo.
There's something much more interesting inside Tokyo Tochō: at its first floor, a discerning traveler will find an amazing travel information center, a wealth of information with literally hundreds of possible destinations in Japan, with maps, explanations and more. Plus, depending on current promotions, you may find there some souvenir shops unlike any other in the city...
EXIF info:
Nikon D300
Lens: 8-16mm F/4.5-5.6G
Focal Length: 8mm
Aperture: F/7.1
Shutter Speed: 1/2500s
ISO Sensitivity: ISO 200