Northala Fields

Northala Fields is an award-winning country-style park located in Northolt, Greater London. It was opened in 2008 and consists of four artificial hills standing next to the A40 Western Avenue, as well as several fishing lakes and a large field area.[2] The hills were constructed using rubble from the demolition of the original Wembley Stadium, which was closed in 2000 and demolished in 2003. The park was created as part of the Northolt and Greenford Country Park project, and backs onto the older Rectory Park.

More information on the Wikipedia page.