Between March 28 and April 3, museums around the world will gather on Twitter in a global celebration of art and culture.

Every month, millions of people Tweet about what they love: products they buy, places they visit, books they’re reading or vacations they’re planning. But it can be challenging to find and engage with the most relevant Tweets, images and videos about products and places when you’re looking for them. So today we’re beginning to test two ways to make it easier for you to discover rich and relevant content about products and places on Twitter.

We’re celebrating the three year anniversary of #TBT by looking at some memorable Tweets.

From March 23-29, thousands of museums around the world gathered on Twitter to celebrate art and culture.

Between 23-29 March, museums near and far will gather on Twitter in a global celebration of art and culture.

At our nine-year mark, we continue to say that Twitter is what it is because of the people who use it. After all, it’s because of you that we have product features like hashtags and best practices like live-Tweeting. Today, these are deeply rooted elements of Twitter and part of mainstream cultural vernacular.

With our thanks to you, today we look back at some of the landmark moments you’ve created – moments that define our history, and perhaps yours.

A history of Twitter through Tweets