Ten years ago, the biggest social network on the planet, Facebook, made its debut as a small chatroom for Harvard students.Today, it now has over 1 billion active monthly users.

To celebrate its birthday, Facebook is also giving users a way to relive the years gone by on their profile with a feature called Look Back, where you can  watch a personalized movie, view a collection of your top photos, or read a “thank you” card from the company.

In the meantime, here’s a look back at the social network’s biggest milestones and how it’s web look has changed over the past decade.

2004

• February 4^th: Mark Zuckerberg and co-founders Dustin Moskovitz, Chris Hughes and Eduardo Saverin launch ‘The Facebook’, a chatroom for Harvard University students
• March: The Facebook expands to more colleges and universities around America.
• September: The Facebook launches the Wall, where students can post messages to their friends.
• December: The Facebook reaches 1 million users.

2005

• September 20^th: The Facebook drops “The’ from its name to become known as just “Facebook”
• September: High school networks are added, allowing high school students to use the social network.
• October: International school networks are added to Facebook and photos can now be uploaded and shared on users’ profiles.
• December: Facebook reaches 6 million users

2006

• April: Facebook mobile launches.
• September 5^th: Facebook News and Mini-Feed make their debut.
• September 26^th: Facebook becomes open for anyone to join.
• December: Facebook doubles its users to 12 million.

2007

• June 2007: Facebook Video launches.
• December 2007: Facebook reaches 58 million users.

2008

• June 10^th: Facebook iPhone App launches.
• February 9^th: The ‘Like’ button makes its debut.

2009

• March 11^th: New Facebook home page launches.
• December: Facebook reaches 360 million users.

2010

• December 2010: Facebook reaches 608 million users.

2011

• September 2011: Facebook Timeline launches.

• November 6th, 2011: Facebook reaches 845 million users

2012

• April 9^th: Facebook acquires Instagram.
• May 18th: Facebook holds its initial public offering at  $26.81 per share.
• October 4^th: Facebook reaches over 1 billion users.

2013

• April 4th: Facebook launches Home

2014

January 30th: Facebook introduces Paper.