Every pass is a compromise between height and distance: the lowest crossing point is rarely the shortest route, and the route that everyone took is whichever combination was survivable. Here…
The useful habit when standing in an unfamiliar square is to look at what faces onto it, because the buildings around the edge record who wanted the space and what…
The question worth asking at the entrance to any tunnel is what problem made digging cheaper than going around. Here are seventeen, and the answers.
1. Pedestrian River Tunnels
Source:…
The feature that makes a fjord a fjord is the sill at its entrance - a shallow threshold of rock and debris left where the glacier terminated. Water inside is…
Every arrangement below is settled, uncontested and functioning perfectly well. What makes them remarkable is that the logic producing them was abandoned centuries ago and the lines were never tidied…
What makes these places worth visiting is not the spring itself but what a community does when free heat is available indefinitely. The answers are remarkably consistent. Here are ten.…