Temple of Poseidon Architecture | Doric Columns & Ancient Facades

The Temple of Poseidon at Cape Sounion is a prime example of Classical Doric architecture from the mid-5th century BCE, dedicated to the Greek God of the sea. Built on a cliff above the Aegean Sea, its surviving metopes once depicted mythological scenes. The design includes entasis for visual correction and precise alignment with the sea horizon.

Architectural details of Temple of Poseidon

Temple of Poseidon ruins at Cape Sounio, Greece, under a clear blue sky.

Architectural style and order

The temple follows the Doric order, one of the three classical styles of ancient Greek architecture. Doric temples are known for their plain, cushion-like capitals atop fluted columns and a strong structure without excessive ornamentation.

Guests exploring Temple of Poseidon

Materials and construction techniques

Local white marble from the nearby Agrilesa quarries was used in the temple’s construction. The columns were made by stacking cylindrical stone blocks called drums and securing them with metal dowels. Craftsmen carved the flutes and details on-site with precise alignment and spacing, showcasing the advanced engineering skills of the time.

Temple of Poseidon at Cape Sounion during sunset, part of a guided tour from Athens.

Column design and layout

The original structure featured 34 Doric columns arranged in a single row, surrounding the central chamber or cella on all four sides. The layout was 6 columns wide and 13 columns long. Each column stands about 6 meters tall with 16 vertical flutes. The subtle bulge in the middle of the columns, known as entasis, corrects optical illusions and makes them appear straight from a distance.

Temple of Poseidon at Sounion during sunset, Attica, Greece, highlighting ancient Greek architecture.

Sculptural decoration

While much of the temple’s decorative sculpture is now lost, it once featured carved friezes and metopes with scenes from Greek mythology. These likely included battles with centaurs and episodes from the life of Theseus—Athens’ legendary hero. Traces of paint found on fragments suggest that the temple was once brightly colored, not the plain white we see today.

Temple of Poseidon at Cape Sounion with panoramic sea view, Athens, Greece.

Orientation and site integration

The temple is strategically oriented to face the sea, offering panoramic views over the Aegean. The position chosen was functional as it served as a landmark for ancient mariners navigating toward Piraeus. Some scholars believe its alignment may also correspond with astronomical events, like the setting sun during the summer solstice.

View of the Temple of Athena Nike on Acropolis Hill

Architectural comparisons and influence

Nearby, the Temple of Athena Sounias stood on a lower terrace. Unlike the Doric Poseidon temple, it used Ionic features and had a different floor plan. The Temple of Poseidon shares similarities with the Temple of Hephaestus in Athens, especially in size and proportion. Its clean design has influenced many neoclassical buildings across Europe and beyond.

What to see at Temple of Poseidon

Cape Sounion Temple of Poseidon with small group tour exploring ancient ruins.

Double colonnade corners

The temple’s corners feature two columns on each side, a detail unique to some Doric temples, enhancing structural strength and symmetry when viewed from multiple angles.

Temple of Poseidon at Cape Sounion with sea view in Athens, Greece.

Low stylobate platform

The three-stepped base, or stylobate, is subtly curved to counter optical illusions, making the temple appear perfectly level despite the uneven cliff terrain

Ancient Doric columns of the Temple of Poseidon in Sounion, Greece against blue sky.

Distinct column fluting

Each column has 16 flutes instead of the more common 20, possibly for faster construction or visual effect, marking a rare variation in Doric design.

Temple of Poseidon pillars at Cape Sounion, Greece, overlooking the Aegean Sea.

Cuttings for roof beams

Stone grooves and notches still visible at the top of columns and walls reveal how wooden beams once supported the tiled roof.

Temple of Poseidon at Cape Sounion, Greece, overlooking the Aegean Sea.

Masonry join marks

Visible clamp and dowel holes between marble blocks show how iron fastenings secured the structure, offering insight into ancient Greek engineering techniques for earthquake resistance.

Temple of Poseidon columns at Cape Sounio under clear blue sky.

Cella foundation remains

The rectangular inner chamber, or cella, is partly preserved, with traces of the central cult statue’s base still visible, marking the temple's sacred core.

Temple of Poseidon on Cape Sounion cliff, Greece, overlooking the Aegean Sea.

Westward orientation

Unusually, the temple's entrance faces west, possibly aligning with sunset rituals or symbolic views over the Aegean, differing from the typical east-facing Greek temples.

Frequently asked questions about Temple of Poseidon architecture

What material was used to build the Temple of Poseidon?

The temple was built using locally quarried marble from Agrileza, a nearby source chosen for its availability and ease of transport to the cliffside site.

Were any colored elements used in the temple’s design?

Traces of pigment suggest parts of the frieze and decorative features were once painted, though most color has faded due to centuries of weather exposure.

How was the temple roof constructed and supported?

Wooden beams supported terracotta roof tiles. Cuttings in the marble indicate how the beams were slotted and anchored into place without visible metal reinforcement.

What remains of the temple’s inner chamber?

The foundation of the cella still exists, including part of the base where a large statue of Poseidon likely stood at the center of the space.

Is there evidence of how the blocks were joined together?

Yes, small square cuttings in the marble blocks show where metal clamps and dowels were inserted to hold stones tightly together without the use of mortar.

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