Random Riddle: 5 Stops

A driver made 5 stops, equal distances apart.

The last stop is the same place from whence he started, making this a round trip.

In between stops 2 and 5, he crossed 5 intersections.

In the middle of his route, there is a secured building he is not allowed to enter.

What building do you suppose that is?
 

Random Riddle: 5 Stops