Portugal–Spain border the border exists between Sanlucar de Guadiana in Spain and Alcoutim in Portugal; it is the first and currently only zip line over an international border. Portugal–Spain border The Portugal–Spain border is the international boundary between Portugal and Spain. Referred to as "la Raya" in Spanish and "A Raia" in Portuguese (the stripe), the current demarcation is almost identical to that defined in 1297 by the Treaty of Alcañices. It is one of the oldest borders in the world. The Portugal–Spain border is 1,214 km (754 miles) long and considered the longest uninterrupted border within the European Union. The border
Bangladesh–India border fencing was completed at the cost of by November 2007. The deadline for project completion was set to 2008–09. By October 2009, about 2649 kilometres of fencing along with about 3326 kilometres of border roads were completed. The deadline for project completion was revised to March 2010. By March 2011, 2735 kilometres of fencing was completed and the deadline was revised to March 2012. Assam shares 263 km of border with Bangladesh out of which 143.9 km is land and 119.1 km is riverine. As of November 2011, 221.56 km of fencing was completed. India has completed the installation of