Zip lines have become extremely popular all over the world. In adventure parks, jungles, lakes and mountains, zip lines could be found everywhere. But there is a zip line where a passport (or E.U. Id) is required. It is called LimitZero and starts in Sancular de Guadiana in Spain and ends on the other side of the River Guadiana in Portugal. The whole experience takes about 40 minutes but you’ ll gain a hour on landing because Portugal is in a different time zone from Spain. These videos describe the unique experience :

Sanlucar de Guadiana in Spain pictured from Portuguese side (iStock image)

Visit the official Limite Zero site for more information