Zoe Chace and Robert Smith are reporting from European borders this week. This is the first story in a four-part series.
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.