WATCH: And so it all ends with a 'Big Bang'

Cape Town - A day after filming their final episode, the cast of The Big Bang Theory were immortalised in cement at Hollywood's TCL Chinese Theatre.

Jim Parson, Kaley Cuoco, Johnny Galecki, Simon Helberg, Kunal Nayyar, Mayim Bialik and Melissa Rauch placed their handprints in cement.

On Tuesday the stars of the popular show said goodbye on social media after shooting the series finale.

The two-part hour-long episodes filmed in front of a live audience will air later this month.

Jim who plays Sheldon led the tributes on social media. Alongside a photo of the apartment door featured in the series, he wrote: "Thank you, apartment 4A, for being a home to so many dreams come true, to so many friendships made. And thank YOU, ALL of you - yes, YOU, reading this right NOW! As we get ready to tape our final episode tonight, to walk in and out of this apartment door for the last time, it is hard to find the words to articulate what a profound experience this has been. (sic)"

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knock, knock, knock, thank you... Thank you, apartment 4A, for being a home to so many dreams come true, to so many friendships made. And thank YOU, ALL of you - yes, YOU, reading this right NOW! As we get ready to tape our final episode tonight, to walk in and out of this apartment door for the last time, it is hard to find the words to articulate what a profound experience this has been. But the words “love” and “gratitude” come to mind... so love and gratitude to all of you. ALL of you. Thank you. ?? (oh! and happy birthday to @sanctionedjohnnygalecki and @kunalkarmanayyar - talk about good timing... may your next 12 years be as vibrant and wonderful as the last 12 years in which i’ve had the pleasure to know and work with you both ??)

A post shared by Jim Parsons (@therealjimparsons) on Apr 30, 2019 at 11:45am PDT

Kaley, who plays the girl next door Penny, shared a picture of the cast after the taping with the caption: "Final group scene. That’s a wrap."

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Final group scene ?? That’s a wrap ?? @bigbangtheory_cbs

A post shared by Kaley Cuoco (@kaleycuoco) on Apr 30, 2019 at 11:50pm PDT

The Big Bang Theory season 12 airs Wednesday at 19:30 on M-Net (DStv 101)