About 1200 the original fortress Kasteln was built in the middle Schenkenberger valley, a few kilometers away from Schenkenberg Castle. In 1238 the castle is first mentioned in a deed of gift to the residents of the castle who were vassals of the Kyburgs. In 1262 Ruchenstein castle was built on the cliff directly behind the fort for the Knight of Ruchenstein. After the extinction of the Kyburg line in 1264, the castle came under the power of the House of Habsburg. Then in 1301 the Ruchenstein line died out, ten years after they had been given the fort as a gift by the Habsburgs. Both castles were acquired by the lords of Mülinen from Brugg. From here, they ruled over a small area on the southern edge of the Jura.
The castle belonged to the family of Mülinen until 1631 when Johann Ludwig von Erlach bought both castles. The Bernese patrician and general ordered the reconstruction of the castle in 1642 to a representative of manor house. Ruchenstein castle was demolished a year later and served as a building material supplier. Because the builder had no previous expertise, and the client was mostly absent, the conversion proved to be expensive and lasted until 1650. After about a century in the possession of the family of Erlach, in 1732 Bern bought the little bailiwick for 90,000 Taler.
After the fall of the Ancien Régime and the Act of Mediation in 1803, the bailiwick came into possession of the newly formed canton of Aargau. The castle was sold in 1836 to a private citizen. In 1855 the brothers Frederick and Louis Carnival of Aarau acquired the property and opened a 'rescue institution for orphans and neglected pupils' of the Reformed denomination. On 24 August 1907 one of the pupils set the castle and adjacent barn on fire. Both buildings suffered heavy damage and had to be rebuilt. It wasn't until 1909 that the Institute started operations in the manor again.
The Institute received the status of a foundation in 1923 and was converted in 1955 in a boarding school for students with behavioral problems. In 1969 next to the castle they built a second school building, swimming pool and a staff house. The entire castle was extensively renovated in 2009 inside and out and adapted to the current needs of the social education.
Kasteln is the only uniform baroque palace built in the Aargau. The current design is mainly due to the modifications under Johann Ludwig von Erlach. At the core is a four-story medieval castle with two-story wings, from 1642–50, to the east and west. The wings were built partly from material from the demolished castle Ruchenstein. The unusually rich interior of the castle in 1907 was lost in the fire.References:
The two-tiered Roman amphitheatre is probably the most prominent tourist attraction in the city of Arles, which thrived in Roman times. Built in 90 AD, the amphitheatre was capable of seating over 20,000 spectators, and was built to provide entertainment in the form of chariot races and bloody hand-to-hand battles. Today, it draws large crowds for bullfighting as well as plays and concerts in summer.
The building measures 136 m in length and 109 m wide, and features 120 arches. It has an oval arena surrounded by terraces, arcades on two levels (60 in all), bleachers, a system of galleries, drainage system in many corridors of access and staircases for a quick exit from the crowd. It was obviously inspired by the Colosseum in Rome (in 72-80), being built slightly later (in 90).
With the fall of the Empire in the 5th century, the amphitheatre became a shelter for the population and was transformed into a fortress with four towers (the southern tower is not restored). The structure encircled more than 200 houses, becoming a real town, with its public square built in the centre of the arena and two chapels, one in the centre of the building, and another one at the base of the west tower.
This new residential role continued until the late 18th century, and in 1825 through the initiative of the writer Prosper Mérimée, the change to national historical monument began. In 1826, expropriation began of the houses built within the building, which ended by 1830 when the first event was organized in the arena - a race of the bulls to celebrate the taking of Algiers.
Arles Amphitheatre is listed as a UNESCO World Heritage Site, together with other Roman buildings of the city, as part of the Arles, Roman and Romanesque Monuments group.