Complex sentence: On 1 December 2006, the museum was renamed the "National Media Museum"; at the same time opening two new £3 million interactive galleries: "Experience TV" and "TV Heaven", dedicated to the past, present and future of television.
Split into simpler sentences: On 1 December 2006, the museum was renamed the "National Media Museum". Alongside this the museum opened Experience TV and TV Heaven-new £3 million interactive galleries dedicated to the past, present and future of television.