The Burj Khalifa is a megatall skyscraper in Dubai, United Arab Emirates.

One World Trade Center is the main building of the World Trade Center complex in Lower Manhattan, New York City.

The White House is the official residence and workplace of the President of the United States.

John F. Kennedy International Airport serves over 59 million passengers annually.

Heathrow Airport is a major international airport in London, United Kingdom.

The London Underground is a public rapid transit system serving London, England.

The Moscow Metro is a rapid transit system serving Moscow, Russia and the neighbouring Moscow Oblast cities.

The London Eye is a giant Ferris wheel on the South Bank of the River Thames in London.

Hartsfield-Jackson Atlanta International Airport has the distinction of being the busiest airport in the world both by passenger traffic and numbers of flights.

O'Hare International Airport is located on the far Northwest Side of Chicago, Illinois.