Lord Bath already has five mazes

"I have received thousands of drawings already so it's going to be a nightmare judging them."

The winning maze will be built over the coming winter.

Longleat's existing mazes range from the traditional to the surreal.

The mirror maze is styled on the fabled search of the Holy Grail.

Visitors are invited to pretend they are knights of the Round Table embarking on a great quest.

Wild sounds

On their journey through a "dark forest", the knights see the sword Excalibur mysteriously rise up and then disappear.

Green Men stare out from trees and wild sounds ring through the forest.

Visitors unwittingly trigger off lightning and thunder.

The mirror maze appears bigger than it is

The maze uses angles to make an object appear in several places.

It also appears to be three times larger than the historic coach house in which it was built.

The hedge maze is made up of more than 16,000 English yew trees.

Guiness Book of Records declared it the world's longest - with 1.69 miles of paths - after it was extended in 1999.

Visitors take an average 90 minutes to complete it. The Blue Peter competition closes on 27 September, with the judging due on 10 October.