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Kaley Cuoco, Tonight Show

Eric Charbonneau/REX Shutterstock

It's safe to say that Kaley Cuoco's 30th birthday was a memorable one.

The Big Bang Theory actress posted a message on her Instagram Monday afternoon, thanking fans far and wide for their well wishes and support on her special day.

"Today was the best birthday I have ever had…Thank you for all the love and best wishes…My heart is overwhelmed with joy and complete contentment," she began by writing alongside a shot of her overlooking the scenic view at Teotihuacan in Mexico.

Cuoco was joined by her close friends in other photos as they all traveled to the famous pyramids just north of Mexico City.

Kaley Cuoco, Instagram

Instagram

The blonde star added, "There have been a few bumps along the way, but thank you God, nothing I can't handle. Thank you to my precious little angles who accompanied me on this trip and gifted me with something so special (they know what I'm referring to) thank you to Eddie @BlackJaguarWhiteTiger @PaulCheca for showing us your beautiful sanctuary—how you have saved these animals from abusive, confined lives and now they are living a life they never could have dreamed of…You are the reason this planet will change. #30isgonna rock."

And between her sweet words to her friends, family and fans—and the adorable photos from her birthday travels—it's pretty clear that Cuoco's big birthday bash is one she won't soon forget.

Happy birthday, Kaley!