Nyholm is a small naval island at the heart of Copenhagen's harbour, forming the northern tip of the Holmen district. Created in the late 17th century when the Royal Danish Navy needed deeper water and more space for its growing fleet, the island has served as a working naval base for more than three centuries, and parts of it remain in military use today. Its most recognisable landmark is the Mastekranen, a towering timber mast crane built in the mid-1700s to hoist masts onto ships of the line; its distinctive silhouette has become an emblem of maritime Copenhagen. Nearby stands the charming octagonal guardhouse known as Vagten, crowned by a slender lantern spire and one of the oldest structures on the island. At the water's edge lies the Sixtus battery, where ceremonial salutes are still fired to mark royal birthdays and other national occasions. Historic naval vessels are moored close by along the quay. Walking across the bridges from Christianshavn or nearby Refshaleøen, visitors reach a quiet, atmospheric world of cobbled quays, red-painted timber buildings, and views back across the water to the city's spires and the Opera House. Although Nyholm is a functioning naval site and access to some areas is restricted, the open quaysides reward those who wander here with a rare sense of stillness so close to the busy centre. The island is steeped in stories of shipbuilding, sea battles, and the sailors who trained here, and it offers one of the most evocative glimpses into Denmark's long seafaring heritage. Come for the history, the harbour light, and the unmistakable outline of the mast crane against the northern sky.
