The monastery was built on low-lying ground specifically to accommodate the Poor Clares, who sought isolation near the river.
The site was abandoned for centuries, remaining partially submerged until the 21st-century restoration.
Queen Isabel, the monastery’s founder, was originally buried here before her remains were moved to the higher-ground Santa Clara-a-Nova monastery.
Excavations revealed that the nuns lived in relative luxury, evidenced by recovered delicate ceramics and jewelry.
The complex's current hydrological system includes an automated pump network that keeps the surrounding area dry despite the river's proximity.
The ruins provide a rare look at the 'siltation' process, where layers of river mud preserved organic artifacts that would have otherwise decayed.
The Gothic church remains one of the largest of its kind in Portugal from the early 14th century.
Mosteiro de Santa Clara-a-Velha is a 14th-century Gothic monastery famously prone to chronic flooding due to its location on the banks of the Mondego River. Founded by Queen Isabel of Aragon in 1314, the site was eventually abandoned in the 17th century because of silt deposits from repeated river overflows. A massive, decade-long archaeological and hydraulic engineering project completed in 2009 successfully restored the site by creating a perimeter wall and a controlled water-management system. Visitors navigate the site via elevated walkways that bypass the water levels that once engulfed the church floor. The interior ruins preserve original architectural elements, including stone arches and remnants of medieval decorative stonework. The site functions as both an archaeological park and a museum containing excavated items like glazed tiles and everyday household objects from the nuns' former living quarters. It remains one of the few sites in Portugal that showcases the physical intersection of medieval architecture and modern hydrological preservation.
The elevated walkway offering a panoramic view of the Gothic arches framed against the backdrop of the modern city of Coimbra.
Walk the entire length of the elevated boardwalk to view the different levels of sediment preservation.
Visit the modern interpretation center before entering the ruins to understand the complex engineering behind the preservation.
Do not attempt to walk on the ground level ruins outside of the marked pathways, as the area is protected archaeological soil.
Closed on Mondays.
