Found on the right bank of the Daugava, approximately half a kilometre upriver from the Skrīveri Agricultural Institute, the hill is in a place where the bank of the Daugava River Valley is split by the deep Ašķere stream valley.  The castle hill was occupied beginning in the first millennium BC, with antiquities from the Lettigalian and Livonian tribes found there.  During the 13th century, a brick castle was built on the hill, but it was sacked during the 17th century.  Nothing remains of the castle.  The castle hill is also known as Raven Hills, and it offers one of the most beautiful views of the central part of the Daugava.  In the direction of Rīga, there is a field with a white cross that represents an ancient church.  There is a hiking trail along the Ašķere stream.  The area is well improved with four trails.  The longest is the Daugava trail (10 km).

The nature park near the town of Ogre is a popular place for leisure, hiking and, in the winter, cross-country skiing. Most of the park is covered with coniferous trees that are on a long and comparatively narrow line of hillocks with steep sides – another element of nature left behind in Latvia by the Ice Age. Many different plants can be found here. The Jaunogres castle hill is one of the most distinct hillocks in the area.

Before its flooding, the canyon of the Daugava River between Pļaviņas and Koknese was one of the most outstanding and beautiful parts of the Baltic terrain, and Oliņkalns hill was one of the largest castle hills in Latvia.  The Andrejs cliff as up to 20 metres high, and it was part of the Daugava canyon.  Before the area was flooded because of the construction of the Pļaviņas hydroelectric power plant, there were rapids near the hill that made it hard for rafters to sail down the river.  Today it is a small island in the reservoir of the plant (it can be seen from the side of the Rīga-Daugavpils highway (A6) opposite Stukmaņi).  It is separated from the shore by 300 metres of river, under which the Dūņas valley is now resting.  A small part of the ramparts of the castle hill can still be seen on the island along with the ruins of an open-air stage and a few metres of the dolomite cliff that have remained above water.  It is thought that the Alene castle was on the hill in the 13th century.  Latvian mountain climbers installed a memorial stone in 1998 opposite Oliņkalns hill.

Одна из наиболее высоких дюн нашего побережья. В советское время в дюне велись копательные работы, так как песок использовался для производства силикатного кирпича. В 80-е годы ХХ века копательные работы были прекращены. Самая высокая часть дюны (хороший вид) сохранилась и поросла сосновым лесом. Создана природная тропа горы Пусену. Находятся в Бернатском природном парке.

Where the little Rumbiņa river flows into the Daugava (on the left bank of the little river opposite the Lielvārde park), there is the Dievkalns castle hill that has been reduced by the waters of the Daugava.  It is also known as the Cepure hill.  According to antiquities that have been found here, representatives of Baltic tribes lived here from the first millennium BC to the 6^th or 7^th century AD.  The level of the Ķegums hydroelectric power plant can be reached by a staircase from which the best view of this object can be found.