NIJO-JO: The Castle of Tokugawa Ieyasu
The greatest ruler of Japan's history, Tokugawa Ieyasu, used one castle as his primary residence when the capital of Japan was Kyoto. It was called Nijo-Jo. This 5-minute video offers a detailed explanation of the history and beauty of this spot. A must see for all tourists.
For more information on Nijo-Jo:
Japan guide's Information: https://www.japan-guide.com/e/e3918.html
The official Kyoto Travel Guide of NiJo-Jo: https://kyoto.travel/en/shrine_temple/119
The official website of Nijo-Jo itself: https://www2.city.kyoto.lg.jp/bunshi/nijojo/english/
A helpful tourist webpage from JapanVistor.com: