Atlanta Hartsfield-Jackson Airport (IATA: ATL) is the busiest airport in the United States and one of the busiest in the world, as it represents the largest hub in the country, with a large number of domestic destinations, as well as international and intercontinental flights. It is the main hub of Delta Airlines.

The airport is open 24 hours a day and has a Domestic Terminal divided by an atrium into two parts (north and south) plus the lobbies (A, B, C, D, E, T) and the International Terminal (hall F).  They are connected by a bus (Terminal Connector Shuttle), a train (SkyTrain) and a remote subway system (Plane Train).  More details here.

The airport has free Wi-fi access, banking services, charging stations for electronic devices as well as electric vehicles, luggage storage, prayer rooms, exclusive spaces for breastfeeding mothers, rest area for pets and dogs guide, games for children, medical services, postal services, tourist information and travel assistance.