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The short version

  • A rectangular temple likely dedicated to Mars was found just beneath the soil in the Taunus Mountains near Frankfurt.
  • The site is part of the Kapersburg fort complex, which housed a Roman military unit for approximately 150 years starting in the second century C.E.
  • Artifacts including a statue fragment and votive stones suggest the location served as a religious center for soldiers and civilians alike.

Archaeologists working in the foothills of the eastern Taunus Mountains have uncovered the remains of a Roman temple that appears to have been dedicated to Mars, the god of war. The discovery was made on the northern outskirts of Frankfurt, where the structure lay concealed just inches below the forest floor. Officials from the Hesse State Office for Monument Preservation announced the find in late September, marking a significant addition to the understanding of Roman military infrastructure in the region.

The temple is rectangular and measures approximately 16 feet in length. Inside, researchers identified a smaller, square chamber defined by three walls that are roughly 20 inches thick. Experts suggest this design indicates an ambulatory temple, featuring a central prayer room accessible via a wooden gate or door and surrounded by covered walkways. This architectural style was common for religious structures associated with military outposts, allowing worshippers to circulate around the sacred inner space.

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Evidence supporting the dedication to Mars includes an inscription found at the site, as well as a fragment of a statue that may have depicted the war god. Additionally, archaeologists unearthed a broken statuette bearing clear attributes of Victoria, the Roman goddess of victory. The figure displays wings, a palm branch, and a laurel wreath, symbols frequently associated with Mars and widely venerated by Roman military personnel. These artifacts reinforce the connection between the temple and the soldiers stationed nearby.

The temple was discovered during ongoing excavations at the Kapersburg fort, a Roman military fortification believed to date back to the second century C.E. The fort likely originated under the reign of Emperor Trajan or Emperor Hadrian. For roughly 150 years, a military unit known as the Numerus Nidensium was stationed there before the site was abandoned in the mid-third century. This unit probably originated from Nida, a Roman town that corresponds to the modern Heddernheim quarter of Frankfurt.

Historical estimates suggest that approximately 160 men were garrisoned at the fort, while up to 700 people resided in the adjacent civilian settlement, or vicus. This village likely housed soldiers' families, merchants, and other non-military residents. The recent excavations focused on this neighboring area after natural events, including drought, pest infestations, and storms, cleared away parts of the surrounding forest, exposing previously hidden structures.

The site forms part of the Upper Germanic-Rhaetian Limes, a 342-mile border system between the Rhine and Danube rivers that was designated a UNESCO World Heritage site in 2005. This frontier marked not only the military limits of the Roman Empire but also the boundaries of its economic and cultural influence. The wooded location has helped preserve the site for centuries, leaving structures and artifacts intact just beneath the top layer of soil.

In addition to the temple, researchers identified remains of craft activities, including blacksmith pits and baking ovens that may have been used for drying grain. Fewer houses were found than anticipated, leading experts to believe the area functioned as an interstitial zone between the fort and the main settlement. A piece of jewelry from a later period found near the temple suggests the site continued to be used after the Roman military presence ended.

Archaeologists are currently deciphering a Latin inscription on another votive stone recovered from within the temple chamber. This work may reveal further details about the site, including the name of the ancient village. Previous excavations at the location have already yielded significant finds, such as a Roman votive stone now displayed in a museum in Rosbach vor der Höhe. The Romans traditionally held two festivals honoring Mars each year, viewing him as a protector of both Rome and their way of life.

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  • Smithsonian Magazine↗Just Inches Below the Forest Floor, Archaeologists in Germany Unearthed a Roman Temple Likely Dedicated to Mars, the God of War