Facts about Edo Castle construction and significance
- 09
A catastrophic fire in 1657 known as the Meireki Fire destroyed Edo Castle's main tower keep, which was never rebuilt, leaving the stone foundation visible to this day.
- 08
Visitors to Edo Castle today walk through the restored Ninomaru Palace, which was rebuilt in 2009 after a 347-year absence following its destruction by fire in 1662.
- 07
In 1638, Tokugawa Ieyasu's successor implemented the Ikkoku ichijo rei decree requiring all daimyo to contribute labor and materials to Edo Castle's expansion, effectively financing the project through mandatory feudal obligation rather than direct taxation.
- 06
Tokugawa Ieyasu's sankin-kotai system required over 250 regional daimyo to maintain elaborate residences within Edo Castle's walls, effectively holding their families hostage to ensure political loyalty during the Edo period.
- 05
Edo Castle's outer moat system spanned approximately 9 kilometers in circumference, making it one of the largest water-based defensive structures ever constructed.
- 04
During the Edo period, the shogun's residence within Edo Castle occupied over 2,000 rooms across multiple palace buildings connected by covered walkways for security and climate control.
- 03
Approximately 100,000 stones weighing up to 130 tons each were quarried and transported to construct Edo Castle's massive defensive walls during the early 1600s.
- 02
The inner citadel of Edo Castle required approximately 300,000 workers and took roughly 5 years to complete under Tokugawa Ieyasu's direction between 1638 and 1643.
- 01
Construction of Edo Castle began in 1457 by Dokan Ota and expanded dramatically after 1590 when Tokugawa Ieyasu made it his headquarters, eventually becoming the largest castle complex in the world.