The original gate was destroyed in 1657 by the Great Fire of Meireki. It was rebuilt one year later and destroyed again by the Great Kanto Earthquake in 1923. It was rebuilt again, partially destroyed during the World War II and the present day gate was made in 1967.
A little known fact is that a very famous samurai, Date Masamune, the "one-eyed dragon" (dokuganryū), was personally in charge of the construction of the original gate.
EXIF info:
Nikon D300
Lens: 12-24mm F/4G
Focal Length: 12mm
Aperture: F/6.3
Shutter Speed: 1/320s
ISO Sensitivity: ISO 400