The castle was probably built in the 13th century most likely in place of an ancient Estonian stronghold. The bailiwick of Karksi was first mentioned in 1248. The stronghold had a chapel dedicated to Apostle Peter. The first reference was made to a local clergyman in 1298. The present stone church, very simple in design, was built in the same place between 1773 and 1778. St. Peter’s Church is in the ruins of Karksi castle. The tower of the church is leaning, the inclination of the tower’s top is 205 cm at the moment. In 1994 it was decided to save the tower using complicated "construction surgery" developed while stabilizing structures in the old town of Tartu. Eight 10- metre-tall bored piles along with concrete beams penetrating foundations form a new bearing surface for the tower. As a result, the further leaning of the tower has stopped.
On the way which takes you to the stronghold, in the former cemetery of the Knights of the Order of the Sword, stands a nice Baroque chapel among trees, built in the early 18th century by Field Marshal George Reinhold von Lieven, the owner of the Karksi manorial estate. The coats of arms of the Lievens and the Mannteuffels have been fixed to the chapel doors. The chapel, similarly, was built with one side on the former foundation and therefore is somewhat leaning. The buildings of the Karksi manor have perished.
Les Invalides is a complex of buildings containing museums and monuments, all relating to the military history of France, as well as a hospital and a retirement home for war veterans, the building"s original purpose. The buildings house the Musée de l"Armée, the military museum of the Army of France, the Musée des Plans-Reliefs, and the Musée d"Histoire Contemporaine, as well as the burial site for some of France"s war heroes, notably Napoleon Bonaparte.
Louis XIV initiated the project in 1670, as a home and hospital for aged and unwell soldiers: the name is a shortened form of hôpital des invalides. The architect of Les Invalides was Libéral Bruant. The enlarged project was completed in 1676, the river front measured 196 metres and the complex had fifteen courtyards. Jules Hardouin Mansart assisted the aged Bruant, and the chapel was finished in 1679 to Bruant"s designs after the elder architect"s death.
Shortly after the veterans" chapel was completed, Louis XIV commissioned Mansart to construct a separate private royal chapel referred to as the Église du Dôme from its most striking feature. Inspired by St. Peter"s Basilica in Rome, the original for all Baroque domes, it is one of the triumphs of French Baroque architecture. The domed chapel is centrally placed to dominate the court of honour. It was finished in 1708.
Because of its location and significance, the Invalides served as the scene for several key events in French history. On 14 July 1789 it was stormed by Parisian rioters who seized the cannons and muskets stored in its cellars to use against the Bastille later the same day. Napoleon was entombed under the dome of the Invalides with great ceremony in 1840. In December 1894 the degradation of Captain Alfred Dreyfus was held before the main building, while his subsequent rehabilitation ceremony took place in a courtyard of the complex in 1906.
The building retained its primary function of a retirement home and hospital for military veterans until the early twentieth century. In 1872 the musée d"artillerie (Artillery Museum) was located within the building to be joined by the Historical Museum of the Armies in 1896. The two institutions were merged to form the present musée de l"armée in 1905. At the same time the veterans in residence were dispersed to smaller centres outside Paris. The reason was that the adoption of a mainly conscript army, after 1872, meant a substantial reduction in the numbers of veterans having the twenty or more years of military service formerly required to enter the Hôpital des Invalides. The building accordingly became too large for its original purpose. The modern complex does however still include the facilities detailed below for about a hundred elderly or incapacitated former soldiers.