Visitors to Atlanta may experience the world’s busiest airport, Hartsfield-Jackson Atlanta International Airport. The efficient layout allows visitors to easily traverse the airport, which is also a hub for both Delta Air Lines and Southwest Airlines. Visitors will find that although a large city, Atlanta is easily traversed by walking, biking and public transit. The rail network MARTA offers easy access to most of the city’s main tourist destinations. Visitors should take usual precautions as they would in any major city. Although often cited as dangerous, Atlanta’s crime rate has dropped significantly in recent years, making it a safe destination for visitors and locals alike.