The palatial Late Antique Roman villa at La Olmeda was built in several stages, beginning in the second quarter of the fourth century and extending in use at least to the end of the fifth. The villa complex centers on the elite quarters of rigorously symmetrical disposition, wherein twenty-seven rooms, twelve with mosaic floors, are disposed around a central patio crossed with mosaic paths in geometric patterns and linked round its perimeter by a wide peristyle. This main building housed the poentior, with its oecus or reception hall, centered in the east wing featuring a particularly resplendently mosaiced floor. Slightly raised semicircular apses mark its northeastern and northwestern end rooms.
The main body of the villa communicated with a baths by a grand passageway. The principal front of the main block faces south, with a porticoed gallery ending in octagonal tower blocks. The residential quarters face north with two rectangular corner towers.
The complex also included working and living quarters of more rustic aspect, kilns for baking roof tiles on the site, three burial grounds, and a section of paved roadway.
Today the site open to the public, while a museum dedicated to the finds is housed in the nearby church of San Pedro de Saldaña.
References:The Chapel of St. Martin is the only completely preserved Romanesque building in Vyšehrad and one of the oldest in Prague. In was built around 1100 in the eastern part of the fortified outer ward. Between 1100 and 1300, the Rotrunda was surrounded by a cemetery. The building survived the Hussite Wars and was used as the municipal prison of the Town of the Vyšehrad Hill.
During the Thirty Years’ War, it was used as gunpowder storage, from 1700 to 1750, it was renovated and reconsecrated. In 1784, the chapel was closed passed to the military management which kept using it as a warehouseand a cannon-amunition manufacturing facility. In 1841, it was meant to be demolished to give way to the construction of a new road through Vyšehrad. Eventually, only the original western entrance was walled up and replaced with a new one in the sountren side. The dilapidating Rotunda subsequently served as a shelter for the poor.