Izu Peninsula, Mountainous peninsula in Shizuoka Prefecture, Japan
The Izu Peninsula extends along the southern coast of Shizuoka Prefecture and includes volcanic mountain ranges, rugged shorelines, and several inhabited valleys. The area consists of a central mountain range sloping toward the Pacific Ocean, forming numerous small bays and rocky outcrops.
American officer Matthew Perry arrived in the port town of Shimoda in 1854 and opened the first United States consulate in Japan there, establishing formal ties between the two countries. This decision followed the Treaty of Kanagawa, which opened Japan to Western trade after two centuries of isolation.
The landform takes its name from the old administrative province of Izu no Kuni and today includes hot spring resorts where travelers have sought relaxation in well-kept ryokan inns for generations. Local residents often visit these towns for multi-day stays, soaking in thermal baths and enjoying traditional kaiseki meals served in tatami rooms.
Travelers reach the region by trains from Tokyo or by car via highways running along the eastern coast. The western coast is less developed and offers quieter roads, while the eastern side has more towns and connections.
The Amagi mountain range in the heart of the peninsula contains steep valleys where wasabi farmers cultivate the plant in clear flowing streams. These farms produce a considerable portion of Japan's wasabi crop and supply fresh roots to restaurants across the country.
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