Warner Bros' Leavesden studios in London has been majorly upgraded. The studio, which has been used to film the "Harry Potter" movies, "Sherlock Holmes" films, as well as "Inception" and parts of Christopher Nolan's "The Dark Knight," just launched its new $150 million complex, according to The Hollywood Reporter.

"As well as helping to generate inward investment and create new jobs both locally and nationally, this significant infrastructure outlay - probably the single biggest the U.K. film industry has witnessed in decades - will further amplify the U.K.'s reputation as the go-to place for film and TV production," said Josh Berger, president and managing director of Warner Bros Entertainment for the UK, Ireland and Spain.

The new complex features huge sound stages, one of the largest heated underwater filming tanks in Europe, and a 100-acre "clear horizon" for outdoor scenes. It also has nine stages that range in size from 10,000 to 36,000 feet. Guests can also experience the newly opened "Making of Harry Potter" tour there.

The new complex is "the first of its kind to be built in the U.K. in 70 years," according to Warner Bros. It "secures the future of over a third of the dedicated major feature film production stage space in the U.K. and helps further position the country as a center of filmmaking excellence."

All eight of the "Harry Potter" movies have been filmed at the studio. Leavesden is likely to be the home of many future blockbusters.