A prefecture located in the Northeast Region of Japan, ruled by the Satake Clan from 1602 to the late 1800s.

The northern-most prefecture of the Kanto region of Japan's main island of Honshuu.

A prefecture in the south-central (Kantou) region on Honshuu Island; also contains a town with the same name.

A prefecture located in the southern Kantou Region of Honshuu, Japan which was composed of the ancient provinces of Sagami and Musashi.

Formerly part of the province of Mutsu ruled by Date Masamune, its capital city is Sendai, where Masamune built his castle, which is now the largest city of the Northeast. Miyagi Prefecture was originally named Sendai Prefecture.

A prefecture on the south-western coast of Kyushu Island; its capital is the City of Nagasaki. It has had close ties with foreign cultures for centuries and was a major center for foreign trade. It was also where most Christian missionaries landed during the sixteenth century, and is still the area with the largest concentration of Christians in Japan.

A prefecture in north-central Honshuu Island stretching along the Sea of Japan; its capital is Niigata City. The prefecture was combined from the ancient provinces of Echigo and Sado.

A prefecture located in the Kantou Region of Japan on the main island of Honshuu which borders Tokyo. It was formerly part of the ancient province of Musashi, which was the largest province in the Kantou and also produced much of the food that fed the region. Its capital is the city of Saitama.

The prefecture is part of the Greater Tokyo Area, and a large number of its residents commute to Tokyo each day from Saitama's cities, which can be described as suburbs of Tokyo.

A prefecture formed from the ancient provinces of Totomi, Suruga, and Izu.

A prefecture located in north-central Japan on the island of Honshuu, its capital is Toyama City and was once known as Ecchuu, governed for some part of its history by the Uesugi Clan.