Clown Travel Agency

- Addresses appear in major cities throughout the United States, as well as locations in London, Paris, Hong Kong, and Sao Paulo
- Locations are all bowling alleys
- The numbers underneath the addresses correspond to storage lockers, and the lock combinations to open them
- Inside each locker is a bag containing a purple and green bowling ball and another bag containing a smartphone, a phone charger, and a Joker playing card
- The exclusion of a location in New York City is most likely due to Heath Ledger, who played The Joker in the upcoming movie and lived there until his recent suicide.

Clown Travel Agency is a website created as part of the viral marketing campaign for the Batman movie, The Dark Knight. The website consists of an interactive image of a stained suitcase with stickers on it from around the world. Underneath the suitcase is an enveloped marked: "Departure Date 4-01," coinciding with the release of the website, and the beginning of this phase of the marketing campaign.
When users click on the papers that stick out of the envelope, a cryptic message pops up which, when clicked, displays a list of addresses around the world. The addresses are accompanied by a series of numbers. The list disappears soon after the addresses are displayed and reveals a final message with instructions directing them to another website, presumably another part of the marketing campaign.