Anne Frank’s diary turns 70

Seventy years ago, on her 13th birthday, Anne Frank received what would become the world's most famous diary.

The red-checkered notebook was given to Frank by her father, Otto, on June 12, 1942—22 days before Frank and her German-born Jewish family went into hiding during the Nazi occupation of the Netherlands.

"I hope I will be able to confide everything to you, as I have never been able to confide in anyone," Frank wrote in the diary on the same day. "And I hope you will be a great source of comfort and support."

Frank died in 1945 in a German concentration camp—crazy to think that Frank would've been just 83 today had she survived.

The diary was published posthumously in 1947 by her father.

The Anne Frank Museum in Amsterdam is asking young people to celebrate her birthday by reflecting on her story. And they have: Frank's name was trending on Twitter early Tuesday.

Frank's diary, Rosemary Jean-Louis wrote on GPB.org, "is an example of rudimentary social media that in the end made a tremendous impact."