4 April 2026 The Future is the Product of the Past

In Switzerland, a Roman amphitheater was discovered during the construction of boathouse

Archaeologists from Aargau Cantonal Archaeology have announced the discovery of a Roman amphitheater in Kaiseraugst, located in the canton of Aargau, Switzerland.

The amphitheater was discovered during the construction of a new boathouse for the Basel Rowing Club on the Rhine at Kaiseraugst. ​The facility is around 50 meters long and 40 meters wide and is located in the valley of a quarry that was abandoned in Roman times.

The Castrum Rauracense is located just west of the Kaiseraugst fort. To the south of the compound, found a large gate the amphitheater complex flanked by two side entrances and the remains of another entrance on the arena western side made from large sandstone blocks.

The grandstands were made of wood, and the impression of a wooden post could still be seen on the structure. All of the evidence, including the oval, entrances, and grandstand post-placement, points to an amphitheater. It dates to late antiquity, most likely the 4th century AD, based on the building materials used, the discoveries, and the fact that it was erected in an abandoned quarry.

The amphitheater was discovered during the construction of a new boathouse for the Basel Rowing Club on the Rhine at Kaiseraugst.
The amphitheater was discovered during the construction of a new boathouse for the Basel Rowing Club on the Rhine at Kaiseraugst. Photo: Aargau Cantonal Archaeology

As a result, the monument emphasizes the prominence of the Castrum Rauracense in the fourth century AD.



📣 Our WhatsApp channel is now LIVE! Stay up-to-date with the latest news and updates, just click here to follow us on WhatsApp and never miss a thing!!



The researchers suggest that the amphitheater is the second amphitheater in the canton of Aargau after the Vindonissa (Windisch), and the third such monument found in Augusta Raurica.

Aargau Cantonal Archaeology stated: “The monument underlines the importance of the Castrum Rauracense in the 4th century AD. The fort was an important settlement with a military function on the Roman border, but also an administrative center.”

The threshold of the side entrance consists of a sandstone block.
The threshold of the side entrance consists of a sandstone block. Photo: Aargau Cantonal Archaeology

Around 44 BC, Lucius Munatius Plancus built Augusta Raurica, or Colonia Augusta Rauracorum, in the area of a native Gallic tribe known as the Rauraci. The town grew to be a thriving commercial trading center in the 2nd century AD, with a population of over 20,000 people.

The Kaiseraugst fort was an important settlement with a military function on the Roman border, but also an administrative center. The Roman city of Augusta Raurica, the archaeological site of the Roman city of Augusta Raurica, and the late antique Castrum Rauracense, form a unit. Today the site extends to both the Aargau and the Basel area.

KANTON AARGAU

Related Articles

An opulent 2,000-year-old ‘city hall’ has been discovered near the Western Wall in Israel

8 July 2021

8 July 2021

An important 2,000-year-old public building has been unearthed near the wailing wall in Israel. Archaeologists from the Israel Antiquities Authority...

British archaeologists unearth the 1200-year-old man-made island

13 February 2022

13 February 2022

A team holding excavations and archaeological surveys on the historic Al Sayah Island in Muharraq, Bahrain found that it’s ‘man-made’,...

‘Incredibly Rare’ Roman Mausoleum Unearthed Near London Bridge Station

13 June 2023

13 June 2023

Archaeologists report discovering an “incredibly rare” and featured preserved floors and walls Roman mausoleum near London Bridge Station, UK. Archaeologists...

Ancient Sister Miners Discovered: Ritual Burial Reveals Hard Lives of Prehistoric Women

4 August 2025

4 August 2025

A groundbreaking archaeological discovery in the Krumlov Forest is shedding new light on prehistoric life, revealing a startling glimpse into...

Norse Runic Text found in Oslo could be Prayer!

30 December 2021

30 December 2021

Archaeologists from the Norwegian Institute for Cultural Heritage Studies (NIKU) have unearthed two objects inscribed in Norse runic text in...

70-Million-Year-Old Giant Flying Reptile Unearthed in Syria — The Country’s First Pterosaur Fossil

24 October 2025

24 October 2025

A colossal flying reptile that once soared over the Cretaceous skies has been discovered in Syria — marking the first-ever...

8,000-year-old Cave paintings found in Türkiye’s İnkaya Cave depict life and death

10 September 2023

10 September 2023

A number of cave paintings dating back some 8,000 years have been found in İnkaya cave in the Marmara province...

Stone Age Boy in Sweden Buried in Spectacular Fur and Woodpecker Feather Headgear

5 March 2026

5 March 2026

Advanced soil analysis uncovers hidden details of Mesolithic clothing at Skateholm cemetery More than 7,000 years ago, along the southern...

A Rock-Cut Temple and Inscriptions from the Neolithic period discovered in Saudi Arabia

6 August 2022

6 August 2022

In a project led by the Saudi Heritage Commission, a multinational team of archaeologists has discovered an 8,000-year-old archaeological site...

Medieval subterranean corridors found by accident in northeast Iran

1 October 2022

1 October 2022

The workers working on a routine road construction project near Shahr-e Belqeys (City of Belqeys) in northeast Iran made an...

Evidence of Brain Surgery performed 3,000 years ago discovered in the ancient city of Tel Megiddo

27 February 2023

27 February 2023

Researchers have discovered a rare instance of delicate cranial surgery, possibly the earliest of its kind in the Middle East,...

4 Aztec child burials unearthed in Mexico and dated to the Early Colonial period may be indicators of Aztec resistance

6 July 2022

6 July 2022

During an archaeological rescue effort in Mexico City’s historic central district of La Lagunilla, the remains of an Aztec house...

8,500-Year-Old Mirror Unearthed at Canhasan in Central Türkiye

29 November 2025

29 November 2025

An 8,500-year-old obsidian mirror has been unearthed at Canhasan in central Türkiye, revealing new insights into early Neolithic craftsmanship and...

Archaeologists Discover Unique Hieroglyphic Version of Ptolemy III’s Canopus Decree

10 September 2025

10 September 2025

Archaeologists in Egypt uncover a rare and complete hieroglyphic version of the Canopus Decree of King Ptolemy III at Tell...

Severe drought in Italy unearths remains of an ancient bridge in Rome

15 July 2022

15 July 2022

Continued severe heat in Italy has uncovered an archaeological treasure in Rome: a bridge reportedly built by the Roman emperor...