Tartu Cathedral (Estonian Tartu toomkirik) is one of the landmarks of the city of Tartu. The building is now an imposing ruin overlooking the lower town. In the small part of it that has been renovated is now located the museum of the University of Tartu, which the university also uses for major receptions.
The hill on which the cathedral later stood (Toomemägi or "cathedral hill") was one of the largest strongholds of the pagan Estonians, and the strategic nature of the site makes it likely that it had been since the earliest times. It was destroyed in 1224 by the Christian invaders of Livonia. Immediately after the conquest the Christians began construction of a bishop's fortress, the Castrum Tarbatae, on this strategic spot. (Parts of the old walls of the previous structures have since been revealed by archaeological excavations).
The construction of the Gothic cathedral on the north side of the cathedral hill was probably begun in the second half of the 13th century. It was surrounded by a graveyard and houses for the members of the cathedral chapter. The cathedral was dedicated to Saints Peter and Paul, who were also the patron saints of the city. It was the seat of the Bishopric of Dorpat, and one of the largest religious buildings of Eastern Europe.
The church was originally planned as a basilica, but the later addition of the three-aisled quire gave it the character of a hall church. The quire (in an early form) and nave were already in use by 1299. The cathedral was completed at the end of the 16th century with the building of the two massive fortress-like towers, originally 66 metres high, on either side of the west front. A wall separated the cathedral grounds and the bishop's fortified residence from the lower town.
In the mid-1520s the Reformation reached Tartu. On 10 January 1525 the cathedral was badly damaged by Protestant iconoclasts, after which it fell increasingly into decay. After the deportation to Russia of the last Roman Catholic Bishop of Dorpat, Hermann Wesel (bishop from 1554 to 1558; died 1563), the cathedral church was abandoned. During the Livonian War (1558–1583) Russian troops devastated the city. When in 1582 the city fell to the Poles, the new Roman Catholic rulers planned to rebuild the cathedral, but the plans were abandoned because of the ensuing Polish-Swedish War (1600–1611). A fire in 1624 compounded the damage.
In 1629 Tartu became Swedish, and the new rulers showed little interest in the derelict building, which during their time fell further into ruin and neglect, except that the burials of the townspeople continued in the graveyard well into the 18th century, while the main body of the church served as a barn. In the 1760s the two towers were reduced from 66 metres to 22 metres, the level of the nave roof, and made into a platform for cannon. The main portal was walled up at this time.
With the re-founding of the German-speaking University of Dorpat by Tsar Alexander I of Russia in 1802, the Baltic German architect Johann Wilhelm Krause was commissioned to build among the cathedral ruins the university library, a three-storey building erected between 1804 and 1807. At the end of the 19th century the northern tower was converted for use as a water tower.
In the 1960s the library building was extended and fitted with central heating. When it was replaced in 1981 by a new university library building, the old library became the home of the historical museum of the University of Tartu (Estonian: Tartu Ülikooli ajaloomuuseum). A thorough building conversion took place in 1985, when the 19th century interior was largely restored. Today the museum contains displays of important artefacts of the university's history, scientific instruments and rare books. The rest of the cathedral ruins and the external walls of the quire have been structurally secured and consolidated.
The Château de Chaumont was founded in the 10th century by Odo I, Count of Blois. The purpose was to protect his lands from attacks from his feudal rivals, Fulk Nerra, Count of Anjou. On his behalf the Norman Gelduin received it, improved it and held it as his own. His great-niece Denise de Fougère, having married Sulpice d'Amboise, passed the château into the Amboise family for five centuries.
Pierre d'Amboise unsuccessfully rebelled against King Louis XI and his property was confiscated, and the castle was dismantled on royal order in 1465. It was later rebuilt by Charles I d'Amboise from 1465–1475 and then finished by his son, Charles II d'Amboise de Chaumont from 1498–1510, with help from his uncle, Cardinal Georges d'Amboise; some Renaissance features were to be seen in buildings that retained their overall medieval appearance. The château was acquired by Catherine de Medici in 1550. There she entertained numerous astrologers, among them Nostradamus. When her husband, Henry II, died in 1559 she forced his mistress, Diane de Poitiers, to exchange Château de Chaumont for Château de Chenonceau which Henry had given to de Poitiers. Diane de Poitiers only lived at Chaumont for a short while.
Later Chaumont has changed hands several times. Paul de Beauvilliers bought the château in 1699, modernized some of its interiors and decorated it with sufficient grandeur to house the duc d'Anjou on his way to become king of Spain in 1700. Monsieur Bertin demolished the north wing to open the house towards the river view in the modern fashion.
In 1750, Jacques-Donatien Le Ray purchased the castle as a country home where he established a glassmaking and pottery factory. He was considered the French "Father of the American Revolution" because he loved America. However, in 1789, the new French Revolutionary Government seized Le Ray's assets, including his beloved Château de Chaumont.
The castle has been classified as a Monument historique since 1840 by the French Ministry of Culture. The Château de Chaumont is currently a museum and every year hosts a Garden Festival from April to October where contemporary garden designers display their work in an English-style garden.