Calling all American travel and design lovers!

CoolCapitals is currently holding a phone case design competition with Dwell.com, and the winner gets a trip to either Amsterdam, Antwerp, Valencia or Zurich.

Submit your phone case design to coolcapitals by August 9th, and you just might get to free trip to Europe.

The prize package includes two roundtrip tickets (from anywhere in the contiguous United States), a five night hotel stay, two city cards that get you free local transportation, discounts and more, and 20 of the phone covers you designed

The phone cases should be made for both iPhone and Blackberry and should feature and include the names of all five coolcapitals cities.  The winning design will be announced August 24.

This contest brings together coolcapitals — a website made by Amsterdam, Antwerp, Valencia and Zurich’s tourism offices, promoting the cities’ art, architecture, food, fashion and design through promotions and informative listings — and Dwell, an American magazine devoted to modern architecture and design.

This is the second time this design contest has been held, and it brings American audiences a greater awareness of the diversity and innovation in the cities’ arts and cultural scenes.

For more information, or to submit your designs, go to Dwell.com.