Honshū in the context of "Acer carpinifolium"

The Izu Islands (伊豆諸島, Izu Shotō; Japanese pronunciation: [i.(d)zɯ, i.(d)zɯ ɕoꜜ.toː]) are a group of volcanic islands stretching south and east from the Izu Peninsula of Honshū, Japan. Administratively, they form two towns and six villages; all part of Tokyo Prefecture. The largest is Izu Ōshima, usually called simply Ōshima.

Although usually called the "Seven Islands of Izu" (伊豆七島 in Japanese), there are in fact more than a dozen islands and islets. Nine among them are currently inhabited.

Ise (伊勢市, Ise-shi; Japanese pronunciation: [iꜜ.se, i.seꜜ.ɕi]), formerly called Ujiyamada (宇治山田), is a city in central Mie Prefecture, on the island of Honshū, Japan. Ise is home to Ise Grand Shrine, the most sacred Shintō shrine in Japan. The city has a long-standing title – Shinto (神都) – that roughly means "the Holy City", and literally means "the Capital of the Kami". As of 31 July 2021, the city had an estimated population of 123,533 in 55,911 households and a population density of 590 people per km. The total area of the city is 208.53 square kilometres (80.51 sq mi).

The Akaishi Mountains (赤石山脈, Akaishi Sanmyaku) are a mountain range in central Honshū, Japan, bordering Nagano, Yamanashi and Shizuoka prefectures. They are also called the Southern Alps (南アルプス, Minami Arupusu), as they join with the Hida Mountains ("Northern Alps") and the Kiso Mountains ("Central Alps") to form the Japanese Alps.

Aichi Prefecture (愛知県, Aichi-ken; Japanese pronunciation: [aꜜi.tɕi, ai.tɕi̥ꜜ.keɴ]) is a prefecture of Japan located in the Chūbu region of Honshū. Aichi Prefecture has a population of 7,461,111 (as of 1 January 2025) and a geographic area of 5,172.92 square kilometres (1,997.28 sq mi) with a population density of 1,442 inhabitants per square kilometre (3,730/sq mi). Aichi Prefecture borders Mie Prefecture to the west, Gifu Prefecture and Nagano Prefecture to the north, and Shizuoka Prefecture to the east. Nagoya is the capital and largest city of the prefecture.

Fukui Prefecture (福井県, Fukui-ken; Japanese pronunciation: [ɸɯ̥.kɯ(ꜜ)(.)i, -kɯ.iꜜ.keɴ, -kɯꜜi.keɴ]) is a prefecture of Japan located in the Chūbu region of Honshū. Fukui Prefecture has a population of 737,229 (1 January 2025) and has a geographic area of 4,190 km (1,617 sq mi). Fukui Prefecture borders Ishikawa Prefecture to the north, Gifu Prefecture to the east, Shiga Prefecture to the south, and Kyoto Prefecture to the southwest.

Fukui is the capital and largest city of Fukui Prefecture, with other major cities including Sakai, Echizen, and Sabae. Fukui Prefecture is located on the Sea of Japan coast and is part of the historic Hokuriku region of Japan. The Matsudaira clan, a powerful samurai clan during the Edo period that became a component of the Japanese nobility after the Meiji Restoration, was headquartered at Fukui Castle on the site of the modern prefectural offices. Fukui Prefecture is home to the Kitadani Formation and Kitadani Family, the Ichijōdani Asakura Family Historic Ruins, and the Tōjinbō cliff range.

The Kii Peninsula (Japanese: 紀伊半島, Hepburn: Kii Hantō) is the largest peninsula on the island of Honshū in Japan and is located within the Kansai region. It is named after the ancient Kii Province. The peninsula has long been a sacred place in Buddhism, Shinto, and Shugendo, and many people would visit from all over Japan as part of the Kumano religious practices.

Yamashiro Province (山城国, Yamashiro no Kuni; Japanese pronunciation: [ja.ma(ꜜ).ɕi.ɾo (no kɯ.ɲi)]) was a province of Japan, located in Kinai. It overlaps the southern part of modern Kyoto Prefecture on Honshū. Aliases include Jōshū (城州), the rare Sanshū (山州), and Yōshū (雍州). It is classified as an upper province in the Engishiki.

Yamashiro Province included Kyoto itself, as in 794 AD Yamashiro became the seat of the imperial court, and, during the Muromachi period, was the seat of the Ashikaga shogunate as well. The capital remained in Yamashiro until its de facto move to Tokyo in the 1870s.

The Tōkaidō road (東海道, Tōkaidō; [to̞ːka̠ido̞ː]), which roughly means "eastern sea route," was the most important of the Five Routes of the Edo period in Japan, connecting Kyoto to the de facto capital of Japan at Edo (modern-day Tokyo). Unlike the inland and less heavily travelled Nakasendō, the Tōkaidō travelled along the sea coast of eastern Honshū, hence the route's name.

The Tōkaidō was first used in ancient times as a route from Kyoto to central Honshu before the Edo period.

The Northern Fujiwara (奥州藤原氏 Ōshū Fujiwara-shi) were a Japanese noble family that ruled the Tōhoku region (the northeast of Honshū) of Japan during the 12th century, 1094-1104, as their own realm.

They succeeded the semi-independent Emishi families of the 11th century, who were gradually brought down by the Minamoto clan loyal to the Imperial Court in Kyoto. They ruled over an independent region that derived its wealth from gold mining, horse-trading and as middlemen in the trade in luxury items from continental Asian states and from the far northern Emishi and Ainu people. They were able to keep their independence vis-a-vis Kyoto by the strength of their warrior bands until they were ultimately conquered by the Kantō samurai clans led by Minamoto no Yoritomo, in the Battle of Ōshū in 1189.