A metal strip on the floor of Eurode Business Center marks the border between Germany and the Netherlands.

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 building was supposed to make it easy to work in both countries. But it's also a reminder of how the European dream isn't yet a reality.

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.