Chōsei is a village located in Chiba Prefecture, Japan. As of 31 December 2020, the village had an estimated population of 14,028 in 6096 households and a population density of 500 persons per km². The total area of the village is 28.32 square kilometres (10.93 sq mi). It is the only remaining municipality classed as a village in Chiba Prefecture.

Kujūkuri Beach is a sandy beach that occupies much of the northeast coast of the Bōsō Peninsula in Chiba Prefecture, Japan. The beach is approximately 60 kilometres (37 mi) long, making it the second longest beach in Japan. Kujūkuri Beach is a popular swimming and surfing destination for inhabitants of Greater Tokyo. The beach is protected as part of Kujūkuri Prefectural Natural Park.