Muromachi

The Amida Hall within the precincts of Uonuma Shrine in Ojiya City, Niigata Prefecture, is a nationally designated Important Cultural Property dating to approximately 1563. This compact thatched Buddhist hall features remarkably short eaves and other snow-country adaptations, offering a rare and authentic example of late Muromachi-period religious architecture connected to the legendary warlord Uesugi Kenshin.

The Kannon Hall of Gotokuji Temple in Aga Town, Niigata Prefecture, is a nationally designated Important Cultural Property built in 1557. This compact thatched-roof hall features bold Muromachi-period bracketing and serves as a vital link between Aizu and Echigo medieval architecture. Inside, ink inscriptions left by Sengoku-era travelers and 33 Ashina clan warriors offer a vivid connection to Japan's feudal past.

The Rengebuji Ossuary (Kotsudo) in Sado City, Niigata Prefecture, is the oldest surviving building in eastern Japan with authentic Zen-style (Zenshūyō) architectural details, dating to approximately 1348. This compact thatched-roof hall, designated a nationally Important Cultural Property, blends Japanese and Chinese building traditions within the grounds of the historic Rengebuji Temple — one of the three great holy sites of Shingon Buddhism, famously known as the Hydrangea Temple.

The Kondo (Golden Hall) of Rengebuji Temple in Sado City, Niigata Prefecture, is a nationally designated Important Cultural Property built during the early Muromachi period (Oei era, 1394–1428). As part of one of the Three Great Sacred Sites of Shingon Buddhism, this five-bay irimoya-style hall enshrining Sho-Kannon Bosatsu has stood as the spiritual heart of Sado Island for over 600 years.