The , , is the Japanese version of a cloister, a covered corridor originally built around the most sacred area of a Buddhist temple, a zone which contained the Kondō and the pagoda. Nowadays it can be found also at Shinto shrines and at shinden-zukuri aristocratic residences.
The kairō and the rōmon were among the most important among the garan elements which appeared during the Heian period. The first surrounded the holiest part of the garan, while the second was its main exit. Neither was originally characteristic of Shinto shrines, but in time they often came to replace the traditional shrine surrounding fence called tamagaki. The earliest example of a kairō/rōmon complex can be found at Iwashimizu Hachiman-gū, a shrine now but a former . The rōmon is believed to have been built in 886, and the kairō roughly at the same time. Itsukushima Jinja is an example of the mature form of the complex.
Two types of kairō exist, one 1- bay wide and another 2-bay wide, the bay being the space between two pillars. The first is by far the most common.
Kairo was a Mexican pop vocal group established in 1993 as a trio made up of Paul Forat, Francisco Zorrilla and Eduardo Verástegui, a future actor. As members left, starting with Verástegui in 1996, they were replaced with others like Gabriel Soto and Roberto Assad, who both joined in 1997, and Paulo César Quevedo in 1998. The band folded in 1999.
Kairo is an indie adventure game, developed and published by Locked Door Puzzle, Richard Perrin's independent studio. Kairo is set in world of minimalist abstract architecture which the player must explore to solve the puzzle contained within.