Hirado Island
Hirado Island is the 4th largest island in Nagasaki Prefecture, located in the Sea of Japan. The entire island and the part of the nearby Kyushu mainland is administered as part of Hirado city. The island's highest peak is Mount Yasumandake. Saikai National Park comprise 24% of the island's total area.
Geology
Hirado Island was formed as a horst elevated from the sea in Pliocene period. Its bedrock features a mixture of the sea sedimentary rocks of Tertiary period, mixed and overlaid by the recent igneous rock. Due to being relatively young, the island is very hilly with large fraction of area over 200 meters elevation, and flat land is limited to marginal coastal plains. The coastline is highly indented and feature a large cliffs along the entire north-west coast facing East China Sea, except for river mouths.History
The Hirado Island port was the primary departure point for the Japanese missions to Sui China and Japanese missions to Tang China in 7th-9th centuries.16 October 1274, the Hirado Island was invaded by the detachment of the Mongol army as the part of Mongol invasions of Japan. During the 2nd invasion of 1281, the island was an important rear base for the Mongols until being abandoned after the invasion failed.
Since Muromachi period in 14th century, the island had become the hub for the Wokou pirates. In the development of the Nanban trade with Europe, the Portuguese trade station was operational on the island in 1550-1561 period. In 1584, the Spanish, British and Dutch traders started visiting the island once again.
The Hirado Domain was established and Hirado Castle built under leadership of the Matsuura clan in 1599. The castle was razed in 1613 and re-built in 1704.
In 1609–1641, a Dutch trading post was established on Hirado Island before being transferred to Dejima. From 1613, the ships of William Adams started operating from Hirado Island too, but the British trade mission was closed in 1623.
In 2005, the city merged with the neighboring towns of Tabira, Ikitsuki, forming Hirado city, compromising all of Hirado Island as well as part of Kyushu.