堀河院（ほりかわいん）は、京都堀川の東に位置する平安時代前期の公卿藤原基経の邸宅で、円融天皇や堀河天皇の里内裏として使われていました。初代関白である藤原基経が建てた名邸で、左京の三条二坊九・十町にあり、中京・矢幡町南部にあたります。堀川に面した西門を正門としていたことからこの名前が付けられました。基経は堀河院を最も愛し、重要な儀式はここで行われ、56歳で亡くなったのもこの邸宅でした。その後、基経の曾孫である兼通の邸宅となり、内裏が焼けた際には円融天皇の里内裏としても使われました。堀河天皇の時には無内裏状態が続き、長期にわたって里内裏とされました。堀河天皇は、この邸宅で育ち、受禅、崩御しています。かつて、京都国際ホテルの前に「堀河天皇里内裏址」の碑があり、堀川音楽高等学校の敷地内では池の遺構が発掘され復元されています。また、京都国際ホテル内の江戸時代の三井家「北家」の敷地跡には、かつての庭や土塀の一部が残されています。
Horikawa-in was the residence of the Heian period court noble Fujiwara Mototsune, located east of Horikawa in Kyoto. It was used as a temporary imperial residence for Emperor En'yū and Emperor Horikawa. This renowned mansion was built by Fujiwara Mototsune, the first regent (Kampaku), and was situated in the ninth and tenth blocks of the second ward of Sanjo in Sakyo, corresponding to the southern part of Yabata-cho in Nakagyo. The name Horikawa-in comes from the fact that its main gate faced the Horikawa River. Mototsune cherished Horikawa-in the most, conducting significant ceremonies there and passing away in this residence at the age of 56. Later, the mansion became the residence of his great-grandson, Kanezumi, and was used as a temporary imperial residence for Emperor En'yū when the Imperial Palace burned down. During Emperor Horikawa's reign, the state of having no permanent imperial palace continued, and the mansion served as the temporary residence for an extended period. Emperor Horikawa was raised, ascended to the throne, and passed away in this residence. There was once a monument in front of the Kyoto International Hotel marking the site of Emperor Horikawa's temporary residence, and the remnants of a pond were excavated and restored on the grounds of Horikawa Music High School. Additionally, within the grounds of the Kyoto International Hotel, part of the gardens and earthen walls of the Mitsui family's "North House" from the Edo period remain preserved.
