Arles-sur-Tech is best known for its abbey, which allegedly holds the relics of Saints Abdon and Sennen in a sarcophagus called Sainte Tombe, traditionally believed to have been brought from Rome 10th century. Its waters are traditionally believed to hold miraculous healing properties.
The Benedictine abbey of Sainte-Marie was founded in 778 and is the oldest Carolingian abbey in Catalonia. The main square contains the houses which were the first to be built around the abbey. The Abbey Sainte-Marie has a beautiful gothic cloister built in the 13th century and a large and impressive 18th century organ. Its most curious item though is a 4th century sarcophagus which once contained the relics of Saints Abdon and Sennen.
References:Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.