The living bridges of Cherrapunji, India are made from the roots of the Ficus elastica tree. The root bridges, some of which are over a hundred feet long, take ten to fifteen years to become fully functional, but they’re extraordinarily strong – strong enough that some of them can support the weight of fifty or more people at a time.

Because they are alive and still growing, the bridges actually gain strength over time – and some of the ancient root bridges used daily by the War-Khasis people of the villages around Cherrapunji may be well over five hundred years old.