Step into the world of “The Big Bang Theory” on the Warner Bros. Studio Tour Hollywood. (photo courtesy of Warner Bros. Studio Tour Hollywood)

Beginning June 28, studio tour guests can step into apartment 4A, see the infamous elevator and visit the CalTech Physics Lab cafeteria from television’s No. 1 comedy series at Stage 48: Script to Screen.

After a hugely successful 12-year, 279-episode run as the longest-running multi-camera series in television history, original sets from “The Big Bang Theory” will be the newest addition to Warner Bros. Studio Tour Hollywood’s interactive soundstage.

Guests will be transported to Pasadena, where the show is set and “The Big Bang Theory” gang focused their energy on scientific discoveries, science fiction and Siam Palace take-out.

There will be plenty of photo-ops for guests to enjoy, including the foyer between apartments 4A and 4B where Leonard (Johnny Galecki), Sheldon (Jim Parsons), Penny (Kaley Cuoco) and Amy (Mayim Bialik) lived adjacent to the infamous elevator.

Guests can recreate Sheldon’s signature knock or dare to sit in his designated “spot” (where he has “eternal dibs”). They can also explore the intricate level of detail the show’s creators put into the design of the iconic set and reminisce about their favorite and most memorable moments.

Additionally, fans can peer into the CalTech Physics Lab cafeteria where Leonard, Sheldon, Howard (Simon Helberg) and Raj (Kunal Nayyar) often discussed the complexities of life and their relationships, in addition to comic book super powers. The cafeteria set will also feature original costumes.

“We are thrilled to invite fans of ‘The Big Bang Theory’ to step into these iconic sets from such a beloved show,” said Gary Soloff, director of marketing for WBSTH. “There is nothing like being in the very spot that legendary film and TV shows were created and seeing authentic sets up close and personal. It’s a truly emotional experience especially with a memorable show that has such a broad global following.”

“We’re thrilled that Apartment 4A and other ‘Big Bang’ locales will remind visitors of all the laughter that took place on our show,” said Chuck Lorre, the show’s co-creator and executive producer.

Other TV shows and movies featured on the Warner Bros. Studio Tour Hollywood include “Friends,” “Batman,” “Shameless” and “Casablanca.”

The Warner Bros. Studio Tour Hollywood is located at 3400 Warner Blvd., Burbank. For information, visit wbstudiotour.com, or call (818)977-TOUR (8687).