A sign listing the offices of the biggest buildings in the United States is now available on Twitter.

A tweet from Twitter user @bob_fitzsinger listed the tallest office building in New York, and the next-closest was in Washington D.C. The tweet, which has since been deleted, also mentioned that the tallest building in California was at the bottom of the list.

The office building signs have been around since the 1920s, and in 2017, the city of San Francisco announced it would begin listing all the office buildings that it owns as part of a citywide initiative.

The tweets also include the current location of each building, along with the building’s current signage.

“The office building building signs are a wonderful way to show how the city’s new signs will impact your office’s unique experience,” the city said in a statement at the time.

“It’s also an easy way to see how many new buildings will be added and how they will impact our existing buildings.”