Innerjuvalt was built about 2 km south-east of the older Hochjuvalt Castle by the Freiherr von Juvalt. It was built in two parts on a narrow rocky outcropping above the entrance to the Domleschg Valley. The upper castle was first built around 1250 and was expanded around 1273. In 1342 two of the von Juvalt family, Albrecht and Bertram, appeared in a probate court to settle their inheritance, with Bertram giving up his rights to Innerjuvalt. In 1372 Elgof and Friedrich von Juvalt divided the inheritance again, with Eglof receiving the castle, its meadows, a mill and vineyards. In 1382 Egolf's wife Ursula was living in the castle. In 1423 Rudolf von Juvalt was ordered to continually live in the castle, but by 1440 they had moved to the more accessible lower castle. However, they added a third story to the tower in the late 15th century.
In 1462 Barbara von Juvalt sold the castle to her brother in law Pedrutt von Wannis. A few decades later it was abandoned and by 1570 was described as a ruin.
The upper castle was built around 1250 as a two story palas, probably to house workers as they completed the castle. A two story main tower and an attached residential wing were added to the north-east of the palas. A third story was added to the tower in the late 15th century. A wall was built on lower western side of the outcropping, with the remainder protected by steep cliffs. A bakery and a cistern were built along this wall. Beginning in 1979 the communities of Domleschg and the Burgenvereine Graubünden added a new roof and repaired and rebuilt the castle. The ruins were excavated in 1980, 1982 and 1990. Today the castle grounds are open for visitors and the tower can be rented by small groups.
The lower castle was built at the foot of the cliff. It consisted of a ring wall with a gatehouse on the southern side. A large palas or residential building was built along the wall. The northern side of the courtyard was terraced for farming. Today very little of the lower castle remains.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.