Best caves around Gratwein-Straßengel are found in the wider Styrian region, offering access to notable subterranean natural wonders. This municipality, located near Graz, serves as a gateway to impressive karst formations. The area is characterized by its natural landscapes and proximity to significant cave systems. Visitors can explore a variety of underground environments, from active river caves to ancient show caves.
Last updated: July 15, 2026
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Military significance. A castle stood here as early as the early Middle Ages, which was converted into a Renaissance fortress in the 16th century. After the demolition of this structure by Napoleonic troops in 1809, the hill did not regain military significance until 1943. The remains of the Renaissance fortress on the Schlossberg: Cannon Bastion, Bell Tower, Bastion, Clock Tower (from left) ©Schmitzberger, 2008 The remains of the Renaissance fortress on the Schlossberg: Cannon Bastion, Bell Tower, Bastion, Clock Tower (from left) Due to the ongoing air raids on Austrian cities, construction began in 1943 on a large-scale system of air raid shelters in Graz's Schlossberg. A total of approximately six kilometers of tunnels (1) with 21 entrances were built around the hill. These were labeled "A" to "X," although not all entrances were completed or assigned all letters. The code name for this company may have been "Felshütte," but this cannot be proven beyond doubt.
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Today, in addition to the mining and factory railway museum, the Graz fairytale railway, the casemates, the Schloßberg lift and the cathedral in the mountain are located in the Schloßberg tunnel. Since the rock is around 4°C, the temperature inside the tunnel is 8 to 12°C all year round - so visitors should dress warmly enough even in summer.
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Nice tunnel and also a lot to see
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a great way to quickly get from one side of the mountain to the other
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Nice trail, fun
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In front of the cave, which you can take a look at, there is a table and benches for a rest.
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Small but nice grade hiking trail
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While there are no major caves directly within Gratwein-Straßengel, the region offers access to impressive subterranean natural wonders nearby. The most notable are the Lurgrotte, known as Austria's largest active water cave, and the Grasslhöhle, the country's oldest show cave. Additionally, the Bear Cave offers a unique experience with a viewpoint and a rest area.
The Lurgrotte is renowned for being Austria's largest and most beautiful stalactite cave, as well as an active river cave. Highlights include the massive 'Giant' Stalactite, which is 13 meters long, and the immense Großer Dom (Big Dome), one of Central Europe's largest cave domes. The cave also features diverse stalactite and stalagmite formations, an underground river, and is a winter home for bats. In winter, adventure tours are available for those seeking a more challenging exploration.
Yes, the Grasslhöhle is known for its accessibility. It features well-maintained and easily walkable paths with effective lighting, making it suitable for visitors of all ages, including older individuals and families. It is Austria's oldest show cave, rich in stalactite formations and historical significance.
For those seeking a more challenging experience, the Women's Cave offers a challenging climb within a forest setting, featuring a rope for assistance. The Lurgrotte also offers 'adventure tours' in winter, which involve river passages and undeveloped sections, requiring crawling and basic physical fitness.
Caves like the Lurgrotte maintain a consistent temperature of around 10°C year-round with high humidity. It's advisable to wear warm clothing, even in summer, and sturdy, non-slip footwear. For winter adventure tours in the Lurgrotte, trekking shoes and a cave overall are recommended, and helmets and headlamps are provided.
Yes, the Lurgrotte cave system has show cave entrances at both Semriach and Peggau. The Lurbach stream flows through the cave, connecting these two points. The Semriach side is particularly known for the 'Giant' Stalactite and the Großer Dom.
The Grasslhöhle is particularly family-friendly due to its easily walkable paths and effective lighting. While the Lurgrotte offers impressive sights for families, some sections or winter adventure tours may be more challenging. The Bear Cave also provides a nice rest area, making it a pleasant stop for families.
The region around Gratwein-Straßengel offers various outdoor activities. You can find numerous road cycling routes, running trails, and easy hikes. For example, the Turnersteig / Hohlensteinhöhle Mountain Bike and Hiking Trail combines caving with forest exploration.
While direct public transport to the cave entrances might require transfers, Gratwein-Straßengel is well-connected to Graz. From Graz, you can find public transport options towards Semriach or Peggau, where the Lurgrotte entrances are located. It's advisable to check local bus schedules for the most up-to-date information.
For detailed information on opening hours, ticket prices, and guided tour schedules for the Lurgrotte, please visit the official Graz Tourism website: graztourismus.at. For the Grasslhöhle, you can find information on the Weiz Tourism website: tourismus-weiz.at.
The Bear Cave is noted as dog-friendly. For the Lurgrotte and Grasslhöhle, it's generally best to check their specific policies regarding pets, as show caves often have restrictions for safety and conservation reasons. Dogs are typically not allowed inside the show cave sections.
The caves in this region, particularly the Lurgrotte and Grasslhöhle, are rich in diverse speleothems. You'll encounter impressive stalactites and stalagmites, sinter walls, and various crystal formations. The Lurgrotte is also an active river cave, showcasing the power of water in shaping these underground landscapes.


Extend your search for the best caves by checking out these guides of the top ones around Gratwein-Straßengel: