The belfry of Abbeville is one of the oldest in France, built in 1209. On 20 May 1940, during a bombing, its roof was damaged and it was only in 1986 that it was rebuilt. The belfry is one of the fifty-six belfries of Belgium and France registered in 2005 by the World Heritage Committee of UNESCO in recognition of its testimony to the rise of municipal power in the region and its architecture. It has housed the museum of the city since 1954.
The Broch of Gurness is an Iron Age broch village. Settlement here began sometime between 500 and 200 BC. At the centre of the settlement is a stone tower or broch, which once probably reached a height of around 10 metres. Its interior is divided into sections by upright slabs. The tower features two skins of drystone walls, with stone-floored galleries in between. These are accessed by steps. Stone ledges suggest that there was once an upper storey with a timber floor. The roof would have been thatched, surrounded by a wall walk linked by stairs to the ground floor. The broch features two hearths and a subterranean stone cistern with steps leading down into it. It is thought to have some religious significance, relating to an Iron Age cult of the underground.
The remains of the central tower are up to 3.6 metres high, and the stone walls are up to 4.1 metres thick.