Osowiec-Twierdza Boardwalk

Top choice in Mazovia & Podlasie

Part of the 9km of walking paths near the visitor centre, this 1km-long boardwalk has sweeping views of the sea of reeds across the marshes and the Biebrza River, especially from the wooden observation tower. It's about 2km northwest of the visitor centre; the path linking the two crosses the river, where there are more good views. Don't miss the moody ruins of the sprawling 19th-century concrete fortifications built by Tsar Alexander III to protect this strategic narrow river crossing.

The west end of the boardwalk can be accessed from a point near where Hwy 65 crosses the river.

Lonely Planet's must-see attractions

Nearby Mazovia & Podlasie attractions

1. Biebrza National Park

1.44 MILES

Central Europe's largest area of natural bog or wetlands is protected by Biebrza (byehb-zhah) National Park. It's Poland's largest park, stretching more…

2. Red Marsh

11.33 MILES

One of Biebrza's most important areas, the Red Marsh (Czerwone Bagno) in the Middle Basin is a strictly protected area of bog forest. A 1km educational…

3. Jedwabne Pogrom Monument

19.59 MILES

On July 10, 1941, over 300 local Jews were rounded up and marched into a barn near the Rynek. The doors were locked and the barn was set on fire,…

4. Tykocin Museum

20.34 MILES

Tykocin's former synagogue, erected in 1642, is considered to be the best-preserved Jewish house of worship in Poland and is an extraordinary window into…

5. Talmudic House

20.34 MILES

Standing opposite the synagogue, this small structure dates to 1772. It houses an annex of the Tykocin Museum and is where you buy tickets. The permanent…

6. Narew National Park

27.37 MILES

Protects an unusual stretch of the Narew River that's nicknamed the 'Polish Amazon', where the river splits into dozens of channels that spread out across…

8. Regional Museum

28.34 MILES

Augustów's regional museum is housed in two locations. The most interesting collection is dedicated to the history of the Augustów Canal and is housed in…