When HeyJude suggested this topic, my hopes were not high of having any pictures of blue buildings in my archives, but I did find a few, assuming turquoise counts. These are all from the colourful Southern States of America.
For more about this challenge, visit Travel Words.
A: Strand Theatre building, now repurposed, Key West, Florida
B: Electric Shack, Shack Up Inn, Mississippi
C: Simmons Jewelry, Clarksdale, Mississippi
D: 25th Inn, 25th Street, Galveston, Texas
E: Bird House Garden, Fondren, Mississippi