The 499-kilometre border running from Carlingford Lough to Lough Foyle will become the only land border between the UK and the European Union after Brexit. The 1998 Belfast Agreement (also known as the Good Friday Agreement) brought peace to Northern Ireland and removed the need for checks along the Border. It also established North-South regulations and institutions that helped support the peace process. The Border is currently invisible and neither side wants the return of infrastructure or the creation of a hard border.