The Copper Kingdom Mining Heritage Centre on Anglesey will officially open today, telling the story of how the island was once the world's leading producer of copper.
Parys Mountain, near Amlwch, has been mined for around four thousand years, dating back to the Bronze Age.
During the 18th and 19th century it was the largest copper mine in the world and at its peak 2,000 people worked there.
The underground workings were last mined in the early part of the 20th century and the new centre is part of a major project to preserve and promote its heritage.
An estimated 15,000 people are expected to visit The Copper Kingdom in its first year.
The centre has been built on the site of the old Copper Bins, where copper was stored on the quayside before being loaded onto ships at Port Amlwch for export all over the world.
An interpretative exhibition gives an insight into copper mining in Amlwch and how the wealth created by the industry shaped the area.
The project is one of 24 to benefit from Cadw's Heritage Tourism Project, which is backed with European funding through the Welsh Government.
Cadw invested £94,000 into the project, with additional £460,000 from the Môn a Menai programme.
The Heritage Lottery Fund also supported the project with a grant of £497,000.
The centre will be opened by Huw Lewis AM, the Minister for Housing, Regeneration and Heritage.