I'm guessing that the "north" building is the shorter structure that holds the Real Meal Deli on the skyway, the "west" building is the tallest structure with the "1st" sign on top of it (1st National Bank Building), and the "east" building is the slightly shorter crappy building (Merchant's Bank Building).Which building is this exactly? I didn't know there were three separate buildings here. Office to residential conversion maybe?
Pro tip: Take the elevator in the "east" building to the top floor (16th). It's a vacant floor and when you step out of the elevator you'll find the hallway mostly dark (at least it was in 2014). Follow the hallway around until you reach the door at the end. This freely opens up into the highest skyway in the Twin Cities (built in the 1930's). It connects the 16th floor of the Merchant's Bank Building to the 17th floor of the 1st National Bank Building. You can get to the skyway through either building's elevators but it feels more adventurous going through the Merchant's Bank Building.