Since 2010, Pretty Little Liars has been grabbing the attention of so many people all over the world. The show holds mysteries and an infinite amount of secrets, I mean that's basically the point of the show. Fans are revealed these secrets and mysteries every Tuesday, but what about the stuff we don't see on television? It's obvious we don't know everything about PLL and its cast, but here are 20 facts to get you started:

1. The main characters’ houses are actually offices of Warner Brothers Studios inside. The actors shoot the outside scenes there, and the indoor scenes elsewhere.

2. Rosewood High School and the Rosewood Courthouse are actually the same building, just different sides.

3. After they shoot a scene at a difference location, like the outside of the Brew café, the crew has to take every sign and trace of the showdown.

4. Pretty Little Liars employees ride in pink “Pretty Little Golf Carts” to get from set to set.

5. The crew puts a letter “A” in every Pretty Little Liars scene.

6. Ian Harding was poor before getting the role of Ezra Fitz. The writer of the show, Marlene, said that Ian was wearing an ugly sweater for his audition; however, Ian argued that he was a struggling actor, and couldn’t afford to buy better-looking clothes.

7. Ian Harding is the biggest prankster on the set. The girls say that Ian loves to annoy them before and after scenes.

8. Aria’s dad in the show, Chad Lowe (brother of actor Rob Lowe), is actually one of the directors for Pretty Little Liars.

9. Sasha Pieterse was only 12 years old when she landed the role of Alison DiLaurentis.

10. Lucy Hale’s full name is Karen Lucille Hale.

11. Ashley Benson said in every scene where someone is crying she laughs, not because she thinks it’s funny, but because she feels uncomfortable.

12. Foreign birthplaces of the cast:

Sasha Pieterse was born in South Africa.

Ian Harding was born in Germany.

Shay Mitchell was born in Canada.

Janel Parrish was born in Hawaii.

13. Troian Bellisario (Spencer Hastings) is the only essential cast member that is married.

14. Aside from Troian, Sasha Pieterse is now engaged to be married.

15. Tyler Blackburn and Ashley Benson dated in real life. They are not officially together at the moment, but they have been on and off for quite a while. Ashley also has been in a long-term relationship with Justin Bieber’s stylist, Ryan Good.

16. Troian’s father is the director of the hit television show NCIS, and he also has a star on the Walk of Fame.

17. Ashley and Lucy already knew each other before getting their roles on the show; they met from chatting online a few years before.

18. Tammin Sursok who plays the role of Jenna Cavanaugh starred in Hannah Montana as Jackson’s model girlfriend.

19. Ashley and Shay are besties in real life. The two hang out all the time on and off set and even have a duet nickname: “Buttahbenzo.”

20. The girls and the writer of the show, Marlene, are very close.

Don’t miss Pretty Little Liars, Tuesdays on ABC Family 8/7c.