The Antequera Dolmens Site is a cultural heritage ensemble comprising three prehistorical monuments: the Dolmen of Menga, Dolmen of Viera and Tholos of El Romeral. It was declared a World Heritage Site in 2016 together with two natural mountain features (the Peña de los Enamorados and El Torcal).
Built during the Neolithic and the Bronze Age out of large stone blocks that form chambers and spaces with lintelled roofs (Menga and Viera) or false cupolas (El Romeral), and used for rituals and funerary purposes, the Antequera megaliths are widely recognised examples of European Megalithism. The megalithic structures are presented in the guise of the natural landscape (buried beneath earth tumuli) and their orientation is based on two natural monuments: La Peña de los Enamorados and El Torcal. These are two indisputable visual landmarks within the property.
The Neolithic Dolmen of Menga represents one of the most important masterpiece of megalithic architecture (Atlantic tradition) based on post-and-lintel construction with an earthen covering, notable for its enormous dimensions that push the size possible in a corridor sepulcher by incorporating the unprecedented solution of intermediate pillars; likewise, the later, Chalcolithic tholos (beehive tomb) of El Romeral complements the two dolmens with its corridor and false dome of drystone masonry (Mediterranean tradition).References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.