It's the first gate in the shrine which is decorated with carvings of animals and mythical creatures. The gate houses two images of Nioh and is also called Nioh-mon.
Nikko Travel Guide
Nikko Travel Guide
Nikko Toshogu Shrine Omotemon Gate Nikko Pictures
From Shizuko Mishima, About.com
Nikko Toshogu - Omotemon Gate
Photo (c) Shizuko MishimaSuggested Reading
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