Around the year 980, King Harald Bluetooth of Denmark, the man who claimed on the great Jelling stone to have made the Danes Christian, built a series of perfectly circular fortresses across his kingdom, with ramparts laid out in precise geometric plans, gates at the four points of the compass and long houses arranged in squares inside. Aggersborg, on the northern shore of the Limfjord near Løgstør, was the largest of them, with a diameter of some two hundred and forty metres, and it is one of the Viking-Age Ring Fortresses listed by UNESCO in 2023, along with Fyrkat, Trelleborg, Nonnebakken and Borgring.
The fortresses were used for only a short time, and their purpose is still debated: perhaps they were military bases, perhaps centres of royal power, perhaps a way of controlling the kingdom during a time of unrest. At Aggersborg, the rampart has been partly reconstructed, and the outline of the fortress, with its gates and streets, is marked in the grass. A visitor centre explains the history. Standing on the rampart, looking out over the fjord, you can imagine the ships that once sailed past.
The Limfjord is a long, winding sound that cuts across northern Jutland from the North Sea to the Kattegat, with islands, bays and inlets, and the landscape around it is gently rolling, with fields, heaths and small towns. The light here is soft and clear, and the sky enormous. The wind is a constant companion, often strong, especially in autumn and winter.
For riders, northern Jutland offers relaxed riding on quiet roads through farmland, along the fjord and to the coast. The roads are generally good, with gentle curves and little traffic, but the landscape is flat, and the wind can make riding tiring. To the west, the North Sea coast, with its dunes, beaches and fishing villages, is wild and beautiful. Ferries cross the Limfjord at several points, small boats that add charm to any route.
Løgstør, a small town about four kilometres away, has fuel, shops and restaurants, and its harbour and the Frederik VII canal, built in the nineteenth century to bypass the shallows of the fjord, are worth a look. The Limfjord is famous for its mussels and oysters, and a plate of fresh mussels steamed in white wine, with bread and a glass of beer, makes a fine meal. Aars, a larger town, is about twenty-six kilometres away.