Galleria is also an excellent place for urban exploration (also known as infiltration). The mall boasts a labyrinth of inter-connected tunnels, garages, loading docks, and secret rooms underneath it. If that wasn't enough, the easily accessible rooftop offers marvelous views of the downtown london skyline.

The basement is accessible through multiple doors found in the underground parking garage complex, as well as several underground loading docks which are left open throughout the day.

The roof is a little more difficult to get to. You have to go through a door labelled authorized personnel located in the southwest corner of the mall on the upper level, located between two shops. From this small service corridor, you can reach one of the sets of fire stairs which go all the way to the roof.