Photographers can submit digital photos to a contest.

The National Geographic Traveler photo contest seeks entries across three categories: nature, cities and people.

The contest features a grand prize of US$10,000 and two first prizes of US$2,500.

Citizens of United States, Australia, Austria, Bangladesh, Brazil, Canada (excluding Quebec), Chile, China, Colombia, Costa Rica, Denmark, Germany, Greece, Hong Kong, Hungary, India, Indonesia, Ireland, Italy, Japan, Malaysia, Mexico, Netherlands, New Zealand, Norway, Peru, Poland, Romania, Russia, Singapore, Spain, Sweden, Switzerland, Taiwan and the United Kingdom are eligible.

The deadline is May 31. There is a US$15 entry fee.

For more information on how to apply, click here.