Where: Japan · Asia · approx. 34.68, 138.96 (vicinity only)
Why this spot: Harbor-mouth shore of Perry's 1854 treaty port; Gyokusenji temple above the beach housed Townsend Harris's first US consulate from 1856
What turns up: pottery shards, sea glass, red jasper, quartz, fossil shells
Access: Open / legal.
Public foreshore along Route 135; picking tumbled shards and glass is normal, report anything that looks like an intact historical artifact per the Cultural Properties Protection Law
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.