20 Mind-Blowing Facts You Never Knew About The Big Bang Theory

2. There's Only One Set Of Stairs

Sadly, unlike Friends, there is no actual building you can go and visit or have your photo taken outside of. Similarly, the staircase featured in the series is actually just one set of stairs. The actors and crew have to reset and redress the scene to make it look as if the characters are climbing more than one flight and passing through the building. And here's us thinking showbiz was glamorous and easy, what a kerfuffle!