The Spain-Portugal border was demarcated as a result of numerous treaties signed over the course of the nation’s history. The earliest of these treaties was the 1143 Treaty of Z… See more

Olivenza is a region along the Spain-Portugal border whose ownership is disputed by the two countries. According to Spain, the region is part of the country’s Extremadur… See more

France borders the northern part of Spain. The Spain-France border is the second-longest international border of all Spain’s bordering countries. The border starts at the Bay of … See more

The border was first established in the Treaty of the Pyrenees, signed by the kingdoms of France and Spain in 1659. There were other agreements made between th… See more