Tykocin Castle

Tykocin, Poland, Poland

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Tykocin Castle in Tykocin, Podlaskie Voivodeship, Poland, is a reconstructed 15th-century royal fortress on an island in the Narew River, originally built in 1433 by Lithuanian noble Jonas Goštautas to replace a wooden stronghold on a swamp-surrounded site ideal for defense.

Expanded by King Sigismund II Augustus in the 1560s into a grand Renaissance residence with a massive arsenal, treasury, library, and bastion fortifications added in 1611–1632 by Krzysztof Wiesiołowski, it hosted key events like Sigismund's embalmed body awaiting burial and the 1705 meeting where Augustus II founded the Order of the White Eagle with Peter the Great.

Occupied by Radziwiłł forces during the 1655 Swedish Deluge—where Janusz Radziwiłł died amid siege—it was later granted to Stefan Czarniecki, rebuilt after 1698, but dismantled in the 18th century by Jan Klemens Branicki for city materials, falling into ruin until its modern reconstruction starting in 2002 now serves as a museum, hotel, and restaurant.