Probably nobody would dare to argue that nature is the best architect. A perfect example is the Nagliai Nature Reserve, whose nature trail, with its stunningly beautiful landscape of the Grey Dunes, is one of the most interesting sights in the whole Curonian Spit National Park. The landscape, which looks as if it were covered with a pale carpet, took shape in the 17th century, when the forest was cut down and sand from the seashore began to move towards the lagoon. In the unique natural complex of the Nagliai reserve you can see the impressive hollows and blowouts formed in the dunes by strong winds, as well as the soils of centuries-old forests buried under the sand that only occasionally peek out. Rare plants listed in the Red Book grow here and the remains of old dunes are exposed – views that leave nobody indifferent. The Nagliai Nature Reserve preserves one of the saddest stories of the Curonian Spit. Between 1675 and 1854 the village of Nagliai was buried by sand here; it changed its location several times but now lies deep under the sand. It is said that at that time the dunes moved by 0.5 to 15 metres a year, and people fought this scourge of nature for a long time but, sadly, without success. From the wind-swept Grey Dunes there is an impressive panorama: on one side the Curonian Lagoon, on the other the rolling Baltic Sea and the green of the coastal pine forests. This whole ensemble of landscapes is simply a breathtakingly perfect natural picture. The Nagliai Nature Reserve is a natural area set aside exclusively for scientific purposes, where any human activity is prohibited, so visitors are asked to keep to the marked trail.