Kairaku-en in the context of "Kōraku-en"

Ibaraki Prefecture (茨城県, Ibaraki-ken; Japanese pronunciation: [i.baꜜ.ɾa.kʲi, i.ba.ɾa.kʲi̥ꜜ.keɴ, i.ba.ɾaꜜ.kʲi̥.keɴ]) is a prefecture of Japan located in the Kantō region of Honshu. Ibaraki Prefecture has a population of 2,828,086 (1 July 2023) and has a geographic area of 6,097.19 square kilometres (2,354.14 square miles). Ibaraki Prefecture borders Fukushima Prefecture to the north, Tochigi Prefecture to the northwest, Saitama Prefecture to the southwest, Chiba Prefecture to the south, and the Pacific Ocean to the east.

Mito, the capital, is the largest city in Ibaraki Prefecture. Other major cities include Tsukuba, Hitachi, and Hitachinaka. Ibaraki Prefecture is located on Japan's eastern Pacific coast to the northeast of Tokyo, and is part of the Greater Tokyo Area, the most populous metropolitan area in the world. Ibaraki Prefecture features Lake Kasumigaura, the second-largest lake in Japan; the Tone River, Japan's second-longest river and largest drainage basin; and Mount Tsukuba, one of the most famous mountains in Japan. Ibaraki Prefecture is also home to Kairaku-en, one of the Three Great Gardens of Japan, and is an important center for the martial art of Aikido.

The Three Great Gardens of Japan (日本三名園, Nihon Sanmeien), also known as "the three most famous gardens in Japan" are considered to include Kenroku-en in Kanazawa, Kōraku-en in Okayama and Kairaku-en in Mito.

The conception of gardens in a group of three is found elsewhere, for example, in the three gardens of Emperor Go-Mizunoo, who abdicated in 1629. At Shugakuin Imperial Villa, Go-Mizunoo maintained landscaped areas at separate elevations on the northeastern outskirts of Kyoto.

Kenroku-en (Japanese: 兼六園; Garden of Six Attributes), located in Kanazawa, Ishikawa, Japan, is a strolling style garden constructed during the Edo period by the Maeda clan. Along with Kairaku-en and Kōraku-en, Kenroku-en is considered one of the Three Great Gardens of Japan and is noted for its beauty across all seasons, particularly in winter. Spread over nearly 25 acres, features of the landscape include meandering paths, a large pond, several tea houses, and one of Japan's oldest fountains. First opening to the public in 1871, the garden was later designated a National Site of Scenic Beauty in 1922, and subsequently received status as a National Site of Special Scenic Beauty in 1985. The grounds are open through paid admission year-round during daylight hours.

Kōraku-en (後楽園, Kōrakuen) is a Japanese garden located in Okayama, Okayama Prefecture. It is one of the Three Great Gardens of Japan, along with Kenroku-en and Kairaku-en. Korakuen was built in 1700 by Ikeda Tsunamasa, lord of Okayama. The garden reached its modern form in 1863.

Zhu Zhiyu, one of the greatest scholars of Confucianism in the Ming dynasty and Edo Japan, helped to redesign the garden.