Viereckschanze in Mšecké Žehrovice, Celtic quadrilateral earthwork in Mšecké Žehrovice, Czech Republic

The Viereckschanze in Mšecké Žehrovice is a Celtic earthwork enclosure from the La Tène period, roughly one kilometre from the village on a spruce-covered rise in the Libeň game reserve. Its trapezoid perimeter measures 116 × 162 metres, 89 metres wide, ringed by a ditch; the earthen and fine-gravel ramparts survive clearly, strongest in the north with two banks and two ditches three to five metres deep. A cross-ditch with a bank divides the interior, where foundations of a 13.5 × 9.5 metre building and three sunken huts were excavated.

The enclosure dates to the La Tène period, when Celts settled the countryside around Mšecké Žehrovice in the last centuries BC. It was excavated in 1943 by Ivan Borkovský, in 1968 by Libuše Jansová and in 1979–1988 by Natália Venclová, who uncovered the quadrilateral rampart. Three sunken huts nearby are dated to the 2nd or 1st century BC, one holding the remains of an iron smelting furnace.

The site reveals Celtic daily life through pottery, tools, and other objects discovered during excavations that reflect how people lived and organized themselves. These findings show the kinds of activities and social structures that characterized the communities inhabiting this area.

The ramparts lie inside the fenced Libeň game reserve and Louky v oboře Libeň nature reserve, so the enclosure itself is not freely accessible. A path with a red-marked hiking trail from Nové Strašecí to Mšecké Žehrovice runs just outside the fence, and the site is at least partly visible from it. The earthworks sit on a spruce-covered rise about one kilometre from Mšecké Žehrovice.

The site is not freely accessible: it lies inside the fenced Obora Libeň game reserve and the Louky v oboře Libeň nature reserve. A red-marked hiking trail from Nové Strašecí to Mšecké Žehrovice runs just outside the fence, and the ramparts are at least partly visible from that path. Archaeologist Jiří Waldhauser judged the finds strikingly poor and doubted permanent settlement.