Spain-Portugal, wonderful border crossing

Spain-Portugal, wonderful border crossing
As you see in the picture, the border between Sanlucar del Guadian in Spain and Alcoutim in Portugal is a river. Tourists can cross the border by Zip-line at the speed of 70 to 80 kilometer per hour. The interesting point is that tourists can save one hour by using such a route, because the time difference between these two cities is about one hour.