Photo credit: Lia Toby
View All: 'Britain's Got Talent' press launch
Next Simon Cowell Slideshow: 'Britain's Got Talent' press launch - London United Kingdom - Thursday 11th April 2013
The flat at Hauptstrasse 155 was where Bowie and Iggy lived between 1976 and 1978 in the city, which inspired the so-called 'Berlin trilogy' albums.
Grint will star alongside Dougray Scott and Ed Westwick in a 10-part TV series for Sony's streaming platform Crackle.
The Brits teamed up at the Hollywood Rose Bowl to perform a cover of The Purple One's 'Nothing Compares 2 U'.