You’re hit by a clean, uncluttered, minimalist design that’s the same around the world. You’re struck by the incredible location or structure that you’re stepping into. That ordeal of trying to find what you want, typical to normal retail stores, is instead replaced by calm.

Since 2001, Apple’s stores have transformed retail unlike any other brand. Their runaway success has inspired copycats, seen the firm team-up with world-renowned architects and created new landmarks in our cities.

So, what’s Apple’s secret? How does it build its stores? How are they thriving when the rest of the retail world is in freefall? And, is the firm’s appearance in some of our most iconic city locations a great way to preserve heritage, or a step too far?