In the 1990s, he moved from traditional skydiving to Base jumping, leaping off fixed objects and using a parachute to break the fall.

BBC: Profile: Skydiver Felix Baumgartner

And there are plenty of variations on the theme: A version of the Levitron called "Floating Ideas" gives you a base over which you can float a variety of objects, including models of the space shuttle, a VW Beetle and a picture frame.

FORBES: Toys Your Techie Friends Will Love

He objects to the fact that it is located next to a military base and does not include names of the dead and disappeared.

BBC: Mexico's controversial memorial for drug war victims

As is well known to participants in the sport of Base Jumping (a mind-bogglingly dangerous activity that involves parachuting from static objects), parachutes have problems when launched from tall buildings.

ECONOMIST: Safety

More than one million historical objects reflecting Cumbria's history have been moved from Carlisle Castle to a purpose-built base at Petteril Bank.

BBC: Carlisle's ?8.2m archive centre opens