There's a certain bias many people have; let's call it "the illusion of safety." That is, believing things they think should be secure actually are. In some cases, that belief is so strong nobody even bothers to make it illegal to, say, sneak into a very important building, like a King or Queen's palace. It's just kind of assumed that would never happen.
Sure, we'd all like to believe it takes some combination of Danny Ocean and Tom Cruise to get into our most "secure" facilities, like the White House. But many times, a little bit of patience, a lot of bravery, and an axe will do just fine.If history has taught us anything, it's that there's no such thing as truly "safe" or "secure." One determined person can make mincemeat of the best-laid defenses. It takes an entire forge to make chain mail, but a single arrow to find its weakness. That's how people can sneak into a building like a nuclear power plant. Here is a list of people and groups that broke into places you'd never believe it was possible to gain access to - with minimal effort.
The United States
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Red Square (During the Cold War)
In 1987, a daring young lad from West Germany had a brilliantly suicidal idea: to end the Cold War by flying his tiny Cessna airplane into Russian airspace, landing right in the middle of Red Square and giving the Russians and NATO something to talk about. And he did it.Despite flying right through the Iron Curtain, supposedly some of the most heavily defended airspace in the world, and fully expecting to be shot down by a squadron of MiGs, 19-year-old Mathias Rust piloted his small plane right to the Kremlin's front door and landed in Red Square like he owned it. People were fired. And by "fired," we mean "shot." Mathias did succeed in a way, too; at the very least, his infiltration proved that Russia was nowhere near the dominant military power it still played at being, and Gorbachev "tore down that wall" a short time later.