On our trip to Europe in 1991, we visited Hampton Court and put the kids in the maze. It took them about 45 minutes to get through it! Here's what wikipedia says about it.
When we were there, I wondered if this was the maze in one of the old Laurel and Hardy shows. Turns out that it isn't. That was shot in the maze of the gardens of the Blenheim Palace. I haven't been there.