“Is this heaven?” “No… It’s Oshkosh.” That nod to the 1989 film Field of Dreams was uttered more than once at this year’s EAA AirVenture Oshkosh. And for good reason.

GE Aviation engineer Mark Johnson doesn’t need palm trees or a view of the ocean for a week away from the job.

More than 300,000 people and 10,000 planes will invade Oshkosh, Wisconsin this week for the Experimental Aircraft Association’s annual week long AirVenture fly-in. Not only is it massive–the largest of its kind in the world–but it’s also one of the most unique.

Oshkosh hosts the world’s largest gathering of pilots and aviation enthusiasts. Thousands fly their planes from as far as California and even Europe to the EAA AirVentures event, which is organized by the Experimental Aircraft Association, turning the otherwise sleepy Wittman Regional Airport on the southern edge of the city into the busiest airfield in the world.

The EAA AirVentures fly-in at Oshkosh, Wis., which begins on Monday, is the world’s largest gathering of aircraft enthusiasts. It takes place every year at the end of July and attracts 10,000 planes from around the globe and over 500,000 visitors.