Castrojeriz village is considered one of the landmarks of historic interest in the Camino de Santiago. Its rich history may take up consideration as castro Visigoth, or perhaps, also, Roman fort, (they say was founded by Julius Caesar) in whose castle was developed important battles between Christians and Moors.
The first mention of this castle dates from the 9th century during the skirmishes with the Muslim forces. There are three clearly differentiated sections: the Roman part which is today reduced to an almost hidden square tower; the Visigoth part comprising the extension to the castle with different masonry work from in the Roman part; and the medieval part.
The trulli, typical limestone dwellings of Alberobello in the southern Italian region of Puglia, are remarkable examples of corbelled dry-stone construction, a prehistoric building technique still in use in this region. These structures, dating from as early as the mid-14th century, characteristically feature pyramidal, domed, or conical roofs built up of corbelled limestone slabs. Although rural trulli can be found all along the Itria Valley, their highest concentration and best preserved examples of this architectural form are in the town of Alberobello, where there are over 1500 structures in the quarters of Rione Monti and Aja Piccola.
The property comprises six land parcels extending over an area of 11 hectares. The land parcels comprise two districts of the city (quarters or Rione Monti with 1,030 trulli; Rione Aia Piccola with 590 trulli) and four specific locations.
Trulli (singular, trullo) are traditional dry stone huts with a corbelled roof.