The site opened in October 1961, and was completed by 1963.

The few weeks since the site opened have brought notable improvements.

Since the site opened in January 2000, it has had 370,000 hits.

The 21-acre site opened in 2006 and features two festivals.

The site opened to the public on 26 May 1962, the construction having cost £2 million.

The site opened to a public beta on July 10, 2006.

The site opened to the public on September 10, 2011.

The site opened in April 2002 with 300 car parking spaces.

After the war the site opened as a prison in 1946.

The site opened in 1976 and has been giving guided tours ever since.