All is right with the world when you're gazing down from the rooftop of Milan's Duomo. That is, until you remember the steep marble stairs that got you there—and are your only way down. Stairways can ...

Vacations are supposed to be relaxing, right? Well, not always. Some destinations make you earn the view. Some require you to earn it with thousands of steps, grueling hikes, and steep climbs that ...