Airports are part and parcel of our lives as travelers. And much like the airlines and passengers who frequent them, they're incredibly diverse: There's the world's most dangerous airport, the world's best airport, and our favorite subset, the best airport restaurants. Now, according to the Airports Council International's preliminary passenger data for 2018, Hartsfield-Jackson Atlanta International is the busiest passenger airport in the world.

According to the data, 107.3 million domestic and international passengers passed through the Georgia airport in 2018. If you think this sounds familiar, that's because it is: Atlanta has been the busiest passenger airport in the world for 21 consecutive years. Why? Chalk it up to location, location, location: Within a two-hour flight of 80 percent of the U.S. population of more than 300 million people, Atlanta serves as a major connecting hub and port of entry into North America.

Though the airport saw a 3.3 percent increase in passenger traffic, other airports are creeping toward the top spot: Its leading competition, Beijing Capital International Airport, saw 100.9 million passengers in 2018 compared to 95.7 million in 2017, a 5.4 percent jump. Dubai International, which is the top airport for international passenger traffic, came in third place. Game on, ATL...

This article was originally published in 2016. It has been updated with new information.