Hayama Shiosai Park and Museum

Hayama Shiosai Park and Museum is a public park that contains a small museum showcasing the extensive marine life in the Hayama bay area. The exhibition notably contains specimens and artifacts from Emperor Shōwa (Hirohito), who was a keen student of marine biology and spent significant time at the neighboring Hayama Imperial Villa during his reign. The park itself is historically significant, as it was established on the grounds of the former Hayama Imperial Villa’s detached palace.

The Japanese gardens are located next to the museum and are designed in the traditional strolling style (kaiyu-shiki). They feature a serene pond, a miniature waterfall, and a tea house called Isshintei where visitors can enjoy a moment of reflection. The landscape is carefully curated to reflect the seasonal beauty of the Miura Peninsula, with black pines that frame views of the Sagami Bay. Inside the museum, the collection includes over 5,000 marine specimens, many of which were collected by the Emperor himself from the local waters. This site offers a unique combination of natural science, imperial history, and traditional horticultural artistry, making it a peaceful retreat from the busier coastal attractions of the area.

Visitor Information
Address	2211 Isshiki, Hayama, Miura District, Kanagawa 240-0111 (Google Maps)
Opening Hours	9:00 AM – 4:30 PM (Last entry 4:00 PM) Closed: Mondays (Open if Monday is a holiday) and Dec 29 – Jan 3
Price	Adults: ¥300 / Children (Elementary & Junior High): ¥150
Website	Visit Website

Access
Station / Stop	Line / Bus	Access Details
Zushi Station	JR Yokosuka Line	Take the Keikyu Bus (Bus No. 12) to the Isshiki Kaigan stop (approx. 20 mins)
Zushi-Hayama Station	Keikyu Zushi Line	Take the Keikyu Bus from the South Exit to the Isshiki Kaigan stop