The Office Building That is Half in Germany, Half in the Netherlands

Does your company have communication problems? Do some departments act like independent countries? That's nothing compared to the headquarters building of the computer security company Alunsa. It straddles the Dutch-German border:

On one side of the building, there's a German mailbox and a German policeman. On the other side, a Dutch mailbox and a Dutch policeman. [...]
The border is open enough that a single building can span it. No border guards, no checkpoints. But a letter sent from the German side of the building takes a week to get to the Dutch side.
A computer security company called Alunsa has offices on both sides of the building. On one side, Alunsa employees call German customers on German phones. On the other side, it's all Dutch. Raimond Potgens, the company's CEO, has two offices, one on either side of the border. He carries his laptop back and forth all day long.

At the link, you can see a photo of the borderline inside the building.

Link