One way to solve a problem

Its Seafront Sunday when the town is closed to traffic and there are stalls and entertainment along the harbour. The sun is shining and there are 2 cruise ships in so plenty of people milling around enjoying themselves and hopefully spending lots of money.

The difficult is always getting the passengers off the ship with minimum disruption, safely and I imagine they hope, without them having to queue for hours. 

It seems they have solved the problem by mooring (parking?) on the roof of this building.