Shukubo or Temple Stays are an overnight stay in a Buddhist temple where you can experience a piece of daily temple life – a truly unique experience you can find in Japan.
Please see the links below for more information.
Overnight stay at a temple: https://www.japan.travel/en/guide/temple-stays/
Mt. Mitake: https://www.japan.travel/en/spot/1631/
Zenkoji Temple: https://www.japan.travel/en/spot/1338/
Koyasan Shukubo (Temple Lodgings): https://www.japan.travel/en/spot/60/
Spirituality in the Mountains of Koyasan: https://www.japan.travel/en/itineraries/a-spiritual-journey-through-sacred-mountains/
Miidera Temple: https://www.japan.travel/en/spot/1063/
Waqoo Miidera: https://www.japan.travel/en/heritage-stays/temple-stays/waqoo-miidera/