Spiral stairways have always looked like mesmerizing art sculptures not to be touched. However, their looks deceive us since ...

One common-held theory is that spiral staircases were first installed in historic castles as vertical baffles, tiring out enemy infiltrators before they could make it to the top. This is why ...

Portions of the spiral staircase that originally connected the two top-most floors of Paris’s Eiffel Tower are scattered among museums and private collections around the world. As of this week ...