Best natural monuments around Semily are located within the Bohemian Paradise UNESCO Global Geopark, showcasing diverse geological history and landscapes. The region features sites shaped by volcanic activity, sedimentary formations, and geomorphological processes. These natural features offer insights into the Earth's past and present geological forces. Semily provides access to a variety of natural attractions for exploration.
Last updated: June 29, 2026
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Wonderful hike in the Bohemian Paradise
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Hrubá Skála Castle is one of the main landmarks of Český ráj. The castle towers over a group of rock spires located six kilometers southeast of the town of Turnov. The rock formations, reaching up to sixty meters high, are found above the valley of the Libuňka river, situated in the landscape between Trosky Castle and Valdštejn Castle.
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The municipality of Hrubá Skála is located in Český ráj near Turnov in the Semily district of the Liberec Region. 617 inhabitants live here. It is located in the immediate vicinity of Hrubá Skála Castle, which was built on a sandstone rock massif in the second half of the 14th century.
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Hruboskalsko is a nature reserve declared on April 22, 1998. With an area of 219.2 ha, it is one of the largest rock towns in the Protected Landscape Area Český ráj. The reason for protection is the extensive rock town with preserved relict pine forests. The Hruboskalsko rock town includes hundreds of rock massifs and individual towers reaching up to 60 m in height. Due to the low resistance of sandstone and the constant effect of various influences, the rocks are rich in a variety of shapes and forms (honeycombs, windows, gates).
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Hruboskalsko is a nature reserve declared on April 22, 1998. With an area of 219.2 ha, it is among the largest rock towns in the Protected Landscape Area Český ráj. The reason for protection is an extensive rock town with preserved relic pine forests. The Hruboskalsko rock town includes hundreds of rock massifs and independent towers, reaching heights of up to 60 m. Due to the low resistance of sandstone and the constant effect of various influences, the rocks are rich in the most diverse shapes and forms (honeycombs, windows, gates).
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Hrubá Skála is a picturesque village in the heart of Bohemian Paradise, near Turnov. The dominant feature here is Hrubá Skála Castle, built on a sandstone rock massif as early as the 14th century. The village has a rich history, first mentioned in writing in 1360, and offers an ideal starting point for discovering the beauty of the surrounding nature.
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Very nice hotel with a good coffee house and friendly service. Climb the tower for a beautiful view.
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very beautiful section of the hike
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Visitors frequently enjoy the unique experience of the Stairway Through the Rock Crevice, known for its cool atmosphere. The impressive Mumlava Waterfall is another favorite, offering a natural spectacle with scenic paths. For panoramic views, Čertova Hora (Devil's Mountain) – Harrachov is highly rated, providing outstanding vistas from its summit.
The region around Semily, part of the Bohemian Paradise UNESCO Global Geopark, showcases diverse geological history. You can find remnants of Permocarboniferous volcanic activity, such as the Outcrop of Basaltic Andesites (Melaphyres) in Semily. The area also features striking sandstone formations like the Hruboskalsko Rock Labyrinth, and basanite outcrops with columnar jointing from Tertiary volcanic activity in Syřenov, often referred to as a 'stony organ'.
Yes, several historical sites are closely linked with the natural landscape. The dominant Trosky Castle, a ruin with two striking towers, is a prominent feature of the Bohemian Paradise. Additionally, Hrubá Skála Castle is situated within the impressive rock city formations. You can also explore the Kopic Rock Carvings Gallery, which combines man-made art with natural rock formations.
The area offers a variety of outdoor activities. For cycling enthusiasts, there are numerous routes, including those around Semily that pass by natural monuments like Mumlava Waterfall and Hrubá Skála Castle. Gravel biking is also popular, with routes available in the wider region as detailed in the Gravel biking around Semily guide. For more challenging adventures, mountain hikes are available, with options like those found in the Mountain Hikes around Semily guide.
Many natural monuments in the Semily region are suitable for families. The Mumlava Waterfall is a great spot for families, with small paths leading to scenic areas. Čertova Hora (Devil's Mountain) – Harrachov also offers family-friendly options, with a cable car descent in summer. Exploring the Hrubá Skála Castle area within the rock city can also be an engaging experience for children.
The natural monuments around Semily are beautiful year-round. Summer offers pleasant conditions for walking through places like the Stairway Through the Rock Crevice, where it's cool between the stones. Spring and autumn provide vibrant colors and comfortable temperatures for hiking. Even in winter, sites like the Mumlava Waterfall are worth seeing, offering a different kind of natural beauty.
Absolutely. The Rieger Trail is a prime example, following the Jizera River through a canyon valley near Semily. This trail, made accessible in 1900, offers a beautiful path along the river. The Stairway Through the Rock Crevice also provides a unique gorge-like walking experience.
Visitors particularly appreciate the stunning views and unique natural formations. Many highlight the cool and pleasant atmosphere when walking through rock crevices, especially in summer. The natural spectacle of waterfalls and the panoramic vistas from mountain summits are also frequently praised. The combination of geological marvels and opportunities for exploration makes the region highly appealing.
Yes, several natural monuments offer excellent viewpoints. Čertova Hora (Devil's Mountain) – Harrachov, at 1020 meters, provides outstanding vistas of the mountains and foreland. The Trosky Castle also offers great views, sometimes extending to the Giant Mountains and Jizera Mountains. Additionally, the Pulverturm Rock Formation is noted for its scenic outlooks.
The Semily region is a key part of the Bohemian Paradise UNESCO Global Geopark. This designation highlights its diverse geological history, including volcanic activity, sedimentary formations, and geomorphological processes. You can find more information about the Geopark's global significance on the UNESCO website.
While many trails in the region are intermediate, some sections and areas are suitable for beginners. For instance, the paths around Mumlava Waterfall are generally accessible. For easier walks, consider exploring the flatter sections of the Rieger Trail or the immediate surroundings of Hrubá Skála Castle, which offer scenic beauty without extreme difficulty.


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