The first and the most frequently used image of Japan is probably the torii, the specific Japanese gates used by the Shinto shrines. Their role is to the separate the sacred area from the profane space and, since Shinto is a religion present only in Japan, these gates cannot be found anywhere else. Here is one of the most beautiful torii in Japan, the world famous "floating" gate of the Itsukushima Shrine, on the Miyajima Island, Hiroshima.
EXIF info:
Nikon D90
Lens: VR 18-55mm F/3.5-5.6G
Focal Length: 20mm
Aperture: F/6.3
Shutter Speed: 1/640s
ISO Sensitivity: ISO 200