- Biržai is the center of Lithuania's karst region, which contains thousands of sinkholes caused by the dissolution of gypsum and limestone layers underground.
- The city has a long-standing tradition of artisanal brewing, with a local beer culture that was historically integrated into the daily life of farmers and noblemen alike.
- During the 17th century, the city served as a vital fortification point for the Grand Duchy of Lithuania against Swedish forces.
- The local soil composition is exceptionally rich in minerals, which influences both the unique chemical properties of the local water and the specific flora found in the surrounding regional park.
About Biržai
Biržai is a unique northern Lithuanian city defined by its dramatic karst landscape, where sinkholes frequently reshape the local terrain. The city is historically significant as the former seat of the Radziwiłł family, whose legacy is preserved in the restored Biržai Castle [13261]. Beyond its architectural heritage, visitors can explore the natural wonders of the Biržai Regional Park [13503], which protects the area's distinct geological formations. The surrounding countryside is dotted with crater-like features, including the notable Cow Cave [16691], highlighting the region's fragile and shifting ground.
Highlights of Biržai
The places our editors single out — and why they're worth your time.
Historical places
Explore the reconstructed 17th-century fortifications and the regional museum housed within the bastioned castle.
Places of interest
Climb the tower for a panoramic view of the 30 unique karst lakes that form a sunken, watery landscape.
Places of interest
Observe one of the most famous and active sinkholes in the region, known for its sudden formation and depth.
Parks
Traverse the protected landscape to witness the geological intensity of Lithuania's most unstable ground.
Places of interest
Walk across the bridge connecting the city to the historic castle grounds over the artificial lake.
Natural attractions
Examine the visible layers of Earth's crust revealed by this man-made geological exposure.
Places of interest
Cross the iconic bridge leading to the 19th-century Astravas manor estate.
Temples
Visit this historic masonry church which serves as a central landmark for the local religious community.
Top things to do in Biržai
The 39 highest-rated places in Biržai, ranked by travellers.
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Places of interest
The Kirkilai Lakes and Observation Tower features a unique landscape formed by the collapse of gypsum layers, resulting...
2
Amusement parks
Raubonių pramogų parkas is a large-scale family amusement park located in Northern Lithuania, spanning 10 hectares. The...
3
Historical places
Biržai Castle is a restored 17th-century bastion-style fortification located in northern Lithuania, functioning as the B...
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Parks
Biržai Regional Park is located in a unique karst landscape area in northern Lithuania characterized by active sinkhole...
5
Places of interest
Cow Cave, known locally as Karvės Ola, is the most famous sinkhole in the Biržai Regional Park, Lithuania. It represents...
6
Historical places
Astravo dvaras is a 19th-century Italian villa-style manor house situated on the northern shore of Lake Širvėna in Birža...
7
Museums
Levandų ūkis (Lavender Farm) is a specialized agricultural destination located in the Mockūnai village of the Biržai dis...
8
Places of interest
Biržų tiltas is a notable pedestrian bridge spanning the Agluona River in the town of Biržai, Lithuania. It serves as a...
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Museums
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Temples
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Temples
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Temples
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Museums
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Places of interest
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Venues
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Parks
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Temples
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Museums
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Museums
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Places of interest
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Places of interest
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Places of interest
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Historical places
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Beaches and ponds
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Places of interest
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Natural attractions
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Parks
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Parks
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Parks
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Temples
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Biržai on the map
Top attractions plotted across the city.
Plan your visit to Biržai
June through August, when the weather is ideal for cycling and exploring the outdoor karst formations and lake trails.
2 days, which allows enough time to tour the castle, visit the geological sites, and experience the local brewery culture.
The city center is compact and walkable, while the surrounding regional park sites are best accessed by bicycle or car.
Stay in the vicinity of the city center or near the Biržai Castle area for proximity to the main historical sites and the Agluona River.
Budget-friendly, with low costs for local food, beer, and entry to regional natural sites.
Frequently asked
Aventuro lists 39 curated attractions in and around Biržai, ranked by traveller ratings.
Kirkilai Lakes and Observation Tower is the highest-rated place to visit in Biržai right now.
The largest category is places of interest, with 11 places to explore.
Travellers also explore Riga, Sigulda, Jelgava.
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