9. Willemstad, Curaçao Legend has it that in the 1800s, when the Dutch ruled Curaçao, the then-governor attributed the migraines that afflicted him to the powerful Caribbean sun reflecting off the colony's stark walls.
The result? An official decree that commanded citizens to paint the structures anything but white.
Today, this World Heritage site owes its distinctive pastel shades to one man's maladies.