You need permission, at least from the owner of the building and maybe the police, but if you get that, no, it's not a crime. Check it out before you do anything.
A person may rappel (American English) or abseil (Commonwealth English) down the side of a building.
No, I have never tried rappelling off a cliff.
The technique in which a climber uses a rope for a controlled descent is called "rappelling." During rappelling, the climber secures themselves to the rope and uses a friction device to manage their descent down a rock face or cliff. This method allows for a safe and controlled way to lower oneself from heights. Rappelling is commonly used in climbing, canyoneering, and rescue operations.
After completing a climb, climbers retrieve their gear by either rappelling down to collect it or by having a partner lower it down to them from the top of the route.
Rock climbers retrieve their anchors after completing a climb by either rappelling down to them or by using a second rope to pull them down from the top.
Probably California...
No, it is not safe to go rappelling without a harness. A harness is a crucial piece of equipment that ensures your safety while rappelling by securing you to the rope. Going without a harness greatly increases the risk of falling and serious injury.
Yes, you can be trespassed from a public building without committing a crime if you violate the building's rules or policies.
Burning down a building (or pretty much any answer that includes damaging property I would assume)
No, but it helps.
Do you want to try tree rappelling on your next outdoor trip for an exciting experience?
Rappelling