noun
regular shrine rebuilding and transfer of the sacred object
A Shinto practice, most famously at Ise Grand Shrine, where the shrine buildings are rebuilt and the deity's object is moved on a fixed cycle (e.g., every 20 years).
伊勢神宮の式年遷宮は、二十年に一度行われる。
The Shikinen Sengū at Ise Grand Shrine is performed once every twenty years.
From 式年 (shikinen, 'fixed year; regular cycle') + 遷宮 (sengū, 'transfer of a shrine's sacred object'). The term is specific to Shinto traditions.