01 / Shell mound
A Jōmon seaside villagesurvives next to City Hall.

About 7,000 to 5,000 years ago the sea reached far inland, and people lived on the edge of the uplands here. The Kurohama Shell Mound (黒浜貝塚) gave its name to Kurohama-style pottery, found across the Kantō region, and became a National Historic Site in 2006. The prefecture's oldest buried dog was found here. Since 2023 the site has been fully open, with the Jōmon shoreline recreated.
- About 7,000–5,000 years ago
- National Historic Site, 2006
- Type site of Kurohama pottery

