The Megalithic Structure of Trilithon in the Worldwide Architecture

The definition of trilithon or trilith is derived from the Greek words, which stand for “‘having three stones’ (τρι-/tri- ‘three’ + λίθος/lithos ‘stone’)” (“Trilithon” 2021). The word trilithon was primarily applied by an English antiquarian, physician and Anglican clergyman, William Stukeley (1687-1765), who had “a significant influence on the later development of archaeology. [He] pioneered the scholarly investigation of the prehistoric monuments of Stonehenge and Avebury in Wiltshire [and] published over twenty books on archaeology and other subjects during his lifetime” (“William Stukeley” 2021).

Haʻamonga ʻa Maui in the Kingdom of Tonga, a Polynesian country and archipelago including 169 islands. An appearance of such structures as trilithons in the furthest corners of the word means that the architectural solution was applied worldwide. Photo by Sarah Kelemen (2009). CC BY 2.0. Photo source: “Trilithon” (2021). In: Wikipedia. The Free Encyclopedia.

Precisely, trilithon is a megalithic structure consisting of three boulders: two vertical and the third arranged horizontally. In such constructions, the two large vertical stones, called posts, constitute the only support for the third stone, which is set horizontally across the top, referred to as a lintel.

The definition of trilithon “is commonly used in the context of megalithic monuments”. Trilithons were built in the Neolithic and Bronze Age, possibly as religious objects or astronomical observatories. “The most famous trilithons are those of Stonehenge in England, those found in the Megalithic temples of Malta […] and the Osireion in Egypt. […] The term also describes the groups of three stones in the Hunebed tombs of the Netherlands and the three massive stones forming part of the wall of the [so-called] Roman Temple of Jupiter at Baalbek, Lebanon. Far from Europe and the Middle East, another famous trilithon is the Haʻamonga ʻa Maui in Tonga, Polynesia” (“Trilithon” 2021).

Typical and most famous examples of trilithons at Stonehenge, England. Photo by Daveahern (2005). “Stonehenge Closeup”. Public domain. Photo source: Wikimedia Commons.

Featured image: Although the three successive megalithic blocks are positioned here horizontally, they are also known as a trilithon. They are the main feature of the Temple of Jupiter Baal (“Heliopolitan Zeus”) in Baalbek, Lebanon. Photo by Brattarb – Own work (2009). CC BY-SA 3.0. Photo source: “Trilithon” (2021). In: Wikipedia. The Free Encyclopedia.


“Trylit” (2013). In: Wikipedia. Wolna Encyklopedia. Available at <>. [Accessed 27th May, 2021].

“Trilithon” (2021). In: Wikipedia. The Free Encyclopedia. Available at <>. [Accessed 27th May, 2021].

“William Stukeley” (2021). In: Wikipedia. The Free Encyclopedia. Available at <>. [Accessed 29th May, 2021].

Daveahern (2005). “Stonehenge Closeup”. In Wikimedia Commons. Available at <>. [Accessed 29th May, 2021].

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