The fortifications of Copenhagen underwent a comprehensive modernization and expansion in the 17th century. The project was commenced and was largely the masterplan of Christian IV in the early 17th century but was continued and completed by his successors. The new fortifications relied on the existing, medieval fortifications of the city but the fortified area was extended and a defensive ring around the city completed particularly with new edifices facing the sea. The ring fortification consisted of four bastioned ramparts and an annexed citadel as well as various outworks.

Christianshavns Vold is a former rampart which was part of the bastioned fortification ring which used to surround Copenhagen, Denmark. Running along the full south-eastern perimeter of Christianshavn and Holmen, it used to form a protective barrier towards the island of Amager. It consists of earthworks with 12 bastions and in front of it ran a moat, Stadsgraven, now forming a broad canal which separates Christianshavn from the rest of Amager. On the other side of Stadsgraven. on Amager, was a lower system of outworks called Christianshavns Enveloppe of which only the northern half survives. Along with Kastellet on the other side of the harbour, it is the only intact part of the fortification system.