Biržai Castle
The best-preserved bastioned castle in Lithuania, built 1586–1589 by Kristupas Radvila Perkūnas (Radziwiłł) — a statement of Radziwiłł/Radvila power in the Calvinist Biržai-Dubingiai line, later destroyed by Swedes in 1704 and reconstructed. The castle represents the magnate estate system that shaped Commonwealth-era Aukštaitija, and its museum displays the aristocratic and military culture of the era. Anchor modes: custodian; material_layer | Search hooks: Biržai Castle; Radziwiłł Radvila bastion; Kristupas Radvila Perkūnas; Calvinist Reformed Biržai; castle reconstruction magnate
Explore the reconstructed bastion castle with its earthen ramparts and water-filled defensive moat, visit the museum inside with exhibits on the Radziwiłł/Radvila family and Commonwealth-era military history, and walk the castle grounds where Calvinist worship once took place.
Dubingiai Castle Site
Archaeological site of a Radziwiłł/Radvila residence on Lake Asveja — one of the most important Calvinist centers in the Grand Duchy, where the Biržai-Dubingiai line held court and a Reformed church stood. The castle ruins are partially excavated, and the site reveals the confessional complexity of magnate culture: these Lithuanian nobles practiced Calvinism within a Catholic-majority Commonwealth. Anchor modes: material_layer; network_route | Search hooks: Dubingiai Castle Site; Radziwiłł Radvila residence; Calvinist church archaeological; Dubingiai dvaras manor; Asveja lake castle mound
Walk the castle site on the Asveja lakeshore, see the partially excavated foundations and the former church site, and appreciate the landscape that connected this Calvinist center to the broader Radziwiłł/Radvila network of estates.
Kėdainiai Old Town
A remarkably preserved multi-confessional Commonwealth town where the Radziwiłł/Radvila family funded a Renaissance Evangelical Reformed Church (completed 1652 by Janusz II Radziwiłł), Scottish merchants established a Lutheran community, and a Jewish community maintained parallel religious life — a compact urban landscape where Catholic, Reformed, Lutheran, and Jewish heritage buildings survive side by side. Anchor modes: material_layer; network_route | Search hooks: Kėdainiai Old Town; Radziwiłł Calvinist Reformed church; Scottish merchants Lutheran; multi-confessional town square; Kėdainių senamiestis
Walk the 29 historical streets of the Old Town, enter the Radziwiłł-funded Reformed church, see the Scottish merchants' houses, visit the former synagogue building, and experience the rare surviving urban fabric of Commonwealth confessional pluralism.
Rokiškis Manor
A magnate estate complex under the Tyzenhauz family that collected European art (Italian, Flemish, French, German paintings) and maintained cultural institutions — an expression of the Commonwealth-era aristocratic patronage system that shaped regional culture. The manor museum displays archaeological findings, old books, documents, numismatics, and applied arts from manor culture. Anchor modes: custodian; material_layer | Search hooks: Rokiškis Manor; Tyzenhauz art collection; manor cultural heritage; Rokiškio dvaras estate; noble family archive
Tour the manor rooms displaying the Tyzenhauz art collection and archaeological finds from the region, walk the manor park, and see the material culture of magnate estate life in Aukštaitija.
Ukmergė
A trading crossroads town whose Old Town preserves 19th–20th century buildings on the site of a Commonwealth-era settlement, and whose Jewish community (known as Vilkomir in Yiddish, ~12,000 residents) was destroyed at the Pivonija forest massacre site in 1941 — a place where the dual calendar (Catholic/folk + Jewish) was violently ended. The Pivonija memorial marks the rupture. Anchor modes: material_layer; network_route | Search hooks: Ukmergė; Pivonija Holocaust memorial; Old Town 19th century; Jewish community Vilkomir; Ukmergės senamiestis trade
Walk the Old Town with its 19th–20th century street structure preserved in the Lithuanian Registry of Cultural Property, and visit the Pivonija forest memorial where the Jewish community was annihilated.