Dom tower in Utrecht

You're standing at the Dom Tower in Utrecht. At just over 112 metres, it's the tallest church tower in the Netherlands and the tallest building in the city. Look at how it's built up. At the bottom, a sturdy, almost castle-like square block. Above it, a slimmer second block. And on top, a light, airy eight-sided lantern. No earlier tower had this three-step build. Notice how you can barely see any buttresses? They're tucked away between the niches of the lowest section.