If Santorini is a business card of Greece, then the blue-domed church should be the business card of Santorini, because at some point it was on the cover of National Geographic Magazine, and thus became a globally known attraction. What’s more coincidental is that this attraction is so simple and straightforward that it’s almost otherworldly. You don’t need high-level photography skills or think about angles. Just the “click” at the entrance is the undisputed best of the day.