Nickels Arcade is the winner for most beautiful alley in Michigan. Here's a few more Michigan alleys, from Kalamazoo:
Alley connecting Corporation Alley to W South Street
Image Source:
oek - Your Moment of 'Zoo
Exchange Place Alley, in Winter, under construction
Whisky Alley
Farmer's Alley, late Spring, under construction
Corporation Alley, late Spring