Why is the main tower closing?

The current tower, rebuilt in 1958 with reinforced concrete, does not meet modern earthquake safety standards. Hiroshima City plans to reconstruct it in its original wooden form, though a start date has not been finalized. The reconstruction may take several years to a decade.

Hiroshima Castle - Travel Guide

Hiroshima Castle, also known as the 'Carp Castle' (Ri-jo), was originally built in the 1590s by feudal lord Mori Terumoto. Completely destroyed by the atomic bomb, it was reconstructed in 1958 using reinforced concrete. IMPORTANT: The main tower (Tenshukaku) will close on March 22, 2026 due to earthquake safety concerns. The castle grounds and Ninomaru area remain free to enter. A new history museum is planned to open in Spring 2027. Visit before March 2026 to see the interior exhibits including samurai armor and swords.