Skagen Old church, also called as 'Sand-Covered Church' was built in the 14th century and dedicated to Saint Lawrence of Rome. It was a brick church of considerable size and located 2 km south-west of the town centre. The white church tower is all that is visible of the former church, the rest of it demolished and the neighboring village having been buried under the sand from nearby dunes.
The church was named for the patron saint of sailors, but was buried by sand from Råbjerg Milen. The desertification that hit the area in the 18th century led to the abandonment of the old parish church to the migrating sands. This area of dunes threatened the church and the village for centuries, and the planting of trees could not prevent further encroachment: the church itself was demolished in 1775. All the furniture, fittings, and interior decoration were sold or moved to a new church (Skagen Church 1841), while the church tower being left to rise above the sand.
References:The Citadelle of Quebec is an active military installation and official residence of both the Canadian monarch and the Governor General of Canada. It is located atop Cap Diamant, adjoining the Plains of Abraham in Quebec City. The citadel is the oldest military building in Canada, and forms part of the fortifications of Quebec City, which is one of only two cities in North America still surrounded by fortifications, the other being Campeche, Mexico.
The first fortifications in Quebec were built by the Governor General of New France Louis de Buade, and completed just in time for the Battle of Quebec in 1690.
After the British conquest in the second half of the 18th century, the problem of Quebec City's defences grew more acute.