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 Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.