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:…
These are working burial grounds and should be treated as such. They are also, by design, significant works of landscape architecture and among the quietest and best-planted spaces in the…
The logic is consistent wherever it appears. Put the settlement on ground that is hard to attack, above the bad air of the valley floor, and on rock that would…
Nearly every effect below comes from one of three things: a curved surface that guides sound, a shape that focuses it, or a surface that refuses to reflect it at…
What distinguishes these from a street of shops is that somebody built a roof over the whole thing on purpose, and then trade organised itself underneath. Here are seventeen.
1.…
A stepwell solves a practical problem beautifully: the water table falls in the dry season, so the structure must reach down to whatever level the water has retreated to, and…