Anybody who can tell me what the fuck this is used for!?

Here is the story... A friend of mine found this today next to a public access hallway at the Davos Congress Center im Switzerland. Chained to a concrete bench. Yes i talk about the highest city of the alps where the old retard Klaus Schwab does his bullshit World Economic Forum every year trying to screw over the whole world. Where coincidentally i grew up. And that Centrum is the actual Spot where the meeting is held... So it is really weirding us out. Its seems like a Launchpad for "something" and looks ready to go. It could be a fake to troll ppl but doesnt make really sense cuz not much ppl come by there... Anybody got any clue what the hell it is?

Hello. I would like construct explosives to attach to pigeons to send after K-Pop musicians. Pic Related is unrelated.
Is this book a legitimate guide on the matter and is its science concrete?
Any similar literature you might recommend?
https://miningandblasting.wordpress.com/wp-content/uploads/2009/09/the-preparatory-manual-of-explosives.pdf

Post wavecutter bows. Discuss wavecutter bows. Roundhouse kick a rogue wave into the concrete.

>Guedelon has completed a second tower

They have completed one of the towers of Guedelon

What are some places that you've gone to that you think are interesting and that you think other people should see?

Unfortunately, I'm not well traveled so I can't contribute very much but here are some places that I've been to that other kommandos might find interesting

Citadel Hill in Halifax is a neat preserved star fort that hosts a small reenactment group that is pretty well done. Also hosts a neat museum of military equipment. They also offer you the opportunity to fire a Snider-Enfield for those who don't otherwise have access to firearms. Also it's nearby:

USS Texas has been successfully refloated, marking a major milestone in her at times uncertain restoration. Last of the dreadnoughts. Last capital ship still standing to win Two!! World!! Wars!! First US battleship to become a museum ship. First US battleship ever to receive AA guns, first to launch an aircraft, first to use a FCS...

ITT: Total Weapon Life. Military museums, museum ships, preserved weapons.
https://youtu.be/yRnYkC6si7M

Let's try and have a thread about fortifications. Do you have any noteworthy fortress/fort/castle/remparts/whatever in your area? Any interesting facts about them? If so, please share.
I come from a village next to the city of Angers, in Western France, where there is this massive castle (château) founded in the 9th century by the Counts of Anjou. It was expanded to its current size in the 13th century.
The outer wall is 3 metres (9.8 ft) thick, extends for about 660 m (2,170 ft) and is protected by seventeen massive towers. Each of the perimeter towers measures 18 m (59 ft) in diameter. The château covers an area of 20,000 square metres (220,000 sq ft). Two pairs of towers form the city and landward entrances of the château. Each of the towers was once 40 metres (130 ft) in height, but they were later cut down for the use of artillery pieces, except for one.
It was never taken during the Middle Ages. It was used as an armory through the First and Second World Wars and severely damaged during World War II when a German ammunition storage dump inside it exploded.
Always thought it would make a great anti-zombie fortress.

How quickly could the average construction company break through the defenses of a typical medieval european castle? The castle is defended by medieval troops and the construction company is allowed its heavy equipment (e.g. cranes, bulldozers, excavators, etc)
hard mode: the siege must be OSHA compliant

Thread dedicated to cross sections of every kind,from castles to vehicles and weapons.