Guardhouse: There used to be 12 guardhouses at Nijo castle.

Nijo castle was listed on UNESCO's World Heritage List in 1994.

The map of Nijo Castle's compound.

The Ninomaru Palace is laid out in a zig-zag shape.

The southside of Kara-mon gate.

The northside of Kara-mon gate.

Typical Japanese room called Shoin-style (Shoin-Zukuri).

The motif of the nail cover.