Title: Megalithic architectural elements
Content:  This article describes several characteristic architectural elements typical of European megalithic (Stone Age) structures.
Title: Megalith
Content:  In Europe megaliths are, in general, constructions erected during the Neolithic or late Stone Age and Chalcolithic or Copper Age (4500–1500 BC). The megalithic structures of Malta are believed to be the oldest in Europe. Perhaps the most famous megalithic structure is Stonehenge in England. In Sardinia, in addition to dolmens, menhirs and circular graves there are also more than 8000 megalithic structure made by a Nuragic civilisation, called Nuraghe: buildings similar to towers (sometimes with really complex structures) made using only rocks. They are often near giant's grave or the other megalithic monuments. The French Comte de Caylus was the first to describe the Carnac stones. Pierre Jean-Baptiste Legrand d'Aussy introduced the terms menhir and dolmen, both taken from the Breton language, into antiquarian terminology. He mistakenly interpreted megaliths as Gallic tombs. In Britain, the antiquarians Aubrey and 
Title: Megalith
Content:  The most common type of megalithic construction in Europe is the portal tomb—a chamber consisting of upright stones (orthostats) with one or more large flat capstones forming a roof. Many portal tombs have been found to contain human remains, but it is debated if their primary function was use as burial sites. The megalithic structures in the northwest of France are believed to be the oldest in Europe based on radiocarbon dating. Though generally known as "dolmens", the term most accepted by archaeologists is "portal tomb". Local names for portal tombs exist in multiple locations, such as anta in Galicia and Portugal, stazzone in Sardinia, hunebed in the Netherlands, Hünengrab in Germany, dysse in Denmark, and cromlech in Wales. It is assumed that most portal tombs were originally covered by earthen mounds. 
Title: Neolithic architecture
Content:  Megaliths found in Europe and the Mediterranean were also erected in the Neolithic period. These monuments include megalithic tombs, temples and several structures of unknown function. Tomb architecture is normally easily distinguished by the presence of human remains that had originally been buried, often with recognizable intent. Other structures may have had a mixed use, now often characterised as religious, ritual, astronomical or political. The modern distinction between various architectural functions with which we are familiar today, now makes it difficult for us to think of some megalithic structures as multi-purpose socio-cultural centre points. Such structures would have served a mixture of socio-economic, ideological, political functions and indeed aesthetic ideals. The megalithic structures of Ġgantija, Tarxien, Ħaġar Qim, 
Title: Spanish architecture
Content:  In the Stone Age, the most common megalith found in the Iberian Peninsula was the dolmen. The plans of these funerary chambers used to be pseudocircles or trapezoids, formed by huge stones stuck on the ground, and others over them, forming the roof. As the typology evolved, an entrance corridor appeared, and gradually took prominence and became almost as wide as the chamber. Roofed corridors and false domes were common in the most advanced stage. The complex of Antequera contains the largest dolmens in Europe. The best preserved, the Cueva de Menga, is twenty-five metres deep and four metres high, and was built with thirty-two megaliths. The best preserved examples of architecture from the Bronze Age are located in the Balearic Islands, where three kinds of construction appeared: the T-shaped taula, the talayot and the naveta. The talayots were troncoconical or troncopiramidal defensive towers. They used to have a central pillar. The navetas, were constructions made of great stones and their shape was similar to a ship hull.
Title: Megalithic art
Content:  Megalithic art refers to art either painted or carved onto megaliths in prehistoric Europe. Elizabeth Shee Twohig has coined the term Megalithic art in her study of 'The Megalithic Art of Western Europe'. Her original definition of Megalithic art focussed on paintings or carvings found on the structural elements, like the kerbstones, orthostats, or capstones of megalithic tombs, but recent investigations have included decorations on Stelae and Menhirs. Megalithic art is found in many places in Western Europe although the main concentrations are in England, Malta, Ireland, Brittany and Iberia. Megalithic art started in the Neolithic and continued into the Bronze Age. Although many monument types received this form of art the majority is carved on Neolithic passage graves. Megalithic art tends to be highly abstract and contains relatively few representations of recognisable real objects. Megalithic art is often similar to prehistoric rock art and contains many similar motifs such as the 'cup and ring mark', although the two forms of rock carving also have large stylistic differences. The meaning of megalithic art is the subject of much debate. Weathering and vandalism have affected many examples of the art, and little of it remains today.
Title: Megalith
Content:  second-most-common tomb type is the passage grave. It normally consists of a square, circular, or cruciform chamber with a slabbed or corbelled roof, accessed by a long, straight passageway, with the whole structure covered by a circular mound of earth. Sometimes it is also surrounded by an external stone kerb. Prominent examples include the sites of Brú na Bóinne and Carrowmore in Ireland, Maes Howe in Orkney, and Gavrinis in France. The third tomb type is a diverse group known as gallery graves. These are axially arranged chambers placed under elongated mounds. The Irish court tombs, British long barrows, and German Steinkisten belong to this group. Standing stones, or menhirs as they are known in France, are very common throughout Europe, where some 50,000 examples have been noted. Some of these are 
Title: Medway Megaliths
Content:  Across Western Europe, the Early Neolithic marked the first period in which humans built monumental structures in the landscape. These were tombs that held the physical remains of the dead, and though sometimes constructed out of timber, many were built using large stones, now known as "megaliths". Individuals were rarely buried alone in the Early Neolithic, instead being interred in collective burials with other members of their community. The construction of these collective burial monumental tombs, both wooden and megalithic, began in continental Europe before being adopted in Britain in the first half of the fourth millennium BCE. The Early Neolithic people of 
Title: Megalith
Content:  Megalithic tombs are aboveground burial chambers, built of large stone slabs (megaliths) laid on edge and covered with earth or other, smaller stones. They are a type of chamber tomb, and the term is used to describe the structures built across Atlantic Europe, the Mediterranean, and neighbouring regions, mostly during the Neolithic period, by Neolithic farming communities. They differ from the contemporary long barrows through their structural use of stone. There is a huge variety of megalithic tombs. The free-standing single chamber dolmens and portal dolmens found in Brittany, Denmark, Germany, Ireland, Netherlands, Sweden, Wales, and elsewhere consist of a large flat stone supported by three, four, or 
Title: Architecture of England
Content:  The earliest known examples of architecture in England are the megalithic tombs of the Neolithic, such as those at Wayland's Smithy and the West Kennet Long Barrow. These cromlechi are common over much of Atlantic Europe: present day Spain; Brittany; Great Britain; and Ireland. Radiocarbon dating has shown them to be, as historian John Davies says, "the first substantial, permanent constructions of man and that the earliest of them are nearly 1,500 years older than the first of the pyramids of Egypt." The Neolithic henges of Avebury and Stonehenge are two of the largest and most famous megalithic monuments in the world. The structure is an annual calendar, but the reason for the massive size 

Question: the most common form of megalithic architecture in europe is?
Answer: the portal tomb.
portal tomb.