About 50 students at Brigham Young University pitched in to help build a world record cardboard box castle designed by civil engineering majors on Monday and then happily destroyed it the same day.

Made of 734 cardboard boxes, the castle--with turrets and cannons--towered above the current record holder built with 566 boxes last September by students in Kirkland House dormitory at Harvard University.

Students from the BYU club EcoResponse led Monday's castle-building to mark the kickoff for BYU's participation in RecycleMania, a nationwide college and university recycling competition.

Those who helped received either a t-shirt commemorating the record or a Frisbee made out of recycled plastic.

For more information contact Bill Rudy at byurecycling@gmail.com.