Lamberk, Castle ruin in Březník, Czech Republic

Lamberk is a castle ruin perched on a steep ridge along the left bank of the Oslava River, southwest of Březník village. The remains show the structure of a medieval fortification with wall fragments and foundations scattered across different levels of the hillside.

Jaroslav z Knínic, a holder of provincial offices, sold the site in 1364 and had Lamberk built, first recorded under his name in 1376. His son Jan Sokol z Lamberka, known as a warrior, was its best-known owner. After the Hussite Wars it passed to Jan Komorovský and was probably abandoned after 1440, during punitive expeditions against the castles of armed robbers; in 1459 it is listed as deserted.

The castle was first mentioned in 1376 under Jaroslav of Knínice, who wrote himself after Lamberk; his son Jan Sokol of Lamberk, a warrior, gave the ruin its best-known name. The sources record no meaning for the name, and the site is now a freely accessible ruin.

The ruins can be reached by a dirt path from Březník or by following the marked red hiking trail through the surrounding forest. The visit is most enjoyable in dry conditions since the hillside is steep and the terrain uneven.

Lamberk's better-known neighbour is Sedlecký hrad, a castle ruin on the opposite bank of the Oslava, only about 220 metres away across the river. The two ruins face each other over the valley, so a single walk from Březník can take in both.