Štramberk Castle ruins have an unknown origin (according to an old tale, the site of its original planned location was on the opposite hill Kotouè, but that was prevented by dwarves from the cave Devil's hole). Apparently, it was made to protect country boundaries. According to the most recent information, the castle was built either by members of the aristocratic family, Benešovic, or more precisely, after 1200, by the princes of the Pøemyslide family. In the 13th century, the castle was owned by the knights of the Templar order (see T. J. Pešina, Prodromus Moraviographiae, 1663). After the abolition of the order in 1312, the castle came under the administration of the Czech king Jan Lucemburský and, between 1333 and 1346, it was owned by the Moravian margrave Karel, later King of Bohemia (Charles IV). From 1350 (since 1359 called castrum Strallenberg), it was 25 later owned by the Moravian margrave Jan Jindøich, the founder of the town; then in 1375 it was taken over by his son, the margrave Jošt Lucemburský. After 1380, the most important owners of the castle were members of the Moravian-Silesian branch of the family Benešovic, the lords of Kravaøe (until 1433). After 1533, the castle started to deteriorate. Its oldest illustration (from 1722) shows a two-palace structure with farm buildings and two prismatic ramparts. In 1783, the outer part of the castle collapsed and the masonry was used for building purposes. The original height of the N-E fortification in the inner part of the castle remained unchanged. Between 1901 and 1903, its cylindrical tower called „bergrit“ (height 40 m, 10 m in diameter) was covered with a roof and changed into a lookout designed by the famous Prague architect Kamil Hilbert. The outer ramparts were partly repaired and completed with two gates. A plaque designed by the sculptor František Juráò, was fitted into the fortification in memory of Adolf Hrstka M.D. (1864-1931), physician and former mayor of Štramberk and its indefatigable promoter. The gothic tower of the castle together with adjoining parts of the fortification (NKP = National cultural monument) generally known as Trúba (local expression for round timber) dominates the town. In 1994, it became its property.
The famous Italian Medici family have given two queens to France: Catherine, the spouse of Henry II, and Marie, widow of Henry IV, who built the current Luxembourg palace. Maria di Medici had never been happy at the Louvre, still semi-medieval, where the fickle king, did not hesitate to receive his mistresses. The death of Henry IV, assassinated in 1610, left the way open for Marie's project. When she became regent, she was able to give special attention to the construction of an imposing modern residence that would be reminiscent of the Palazzo Pitti and the Boboli Gardens in Florence, where she grew up. The development of the 25-hectare park, which was to serve as a jewel-case for the palace, began immediately.
The architect, Salomon de Brosse, began the work in 1615. Only 16 years later was the palace was completed. Palace of Luxembourg affords a transition between the Renaissance and the Classical period.
In 1750, the Director of the King's Buildings installed in the wing the first public art-gallery in France, in which French and foreign canvases of the royal collections are shown. The Count of Provence and future Louis XVIII, who was living in Petit Luxembourg, had this gallery closed in 1780: leaving to emigrate, he fled from the palace in June 1791.
During the French Revolution the palace was first abandoned and then moved as a national prison. After that it was the seat of the French Directory, and in 1799, the home of the Sénat conservateur and the first residence of Napoleon Bonaparte, as First Consul of the French Republic. The old apartments of Maria di Medici were altered. The floor, which the 80 senators only occupied in 1804, was built in the middle of the present Conference Hall.
Beginning in 1835 the architect Alphonse de Gisors added a new garden wing parallel to the old corps de logis, replicating the look of the original 17th-century facade so precisely that it is difficult to distinguish at first glance the old from the new. The new senate chamber was located in what would have been the courtyard area in-between.
The new wing included a library (bibliothèque) with a cycle of paintings (1845–1847) by Eugène Delacroix. In the 1850s, at the request of Emperor Napoleon III, Gisors created the highly decorated Salle des Conférences, which influenced the nature of subsequent official interiors of the Second Empire, including those of the Palais Garnier.
During the German occupation of Paris (1940–1944), Hermann Göring took over the palace as the headquarters of the Luftwaffe in France, taking for himself a sumptuous suite of rooms to accommodate his visits to the French capital. Since 1958 the Luxembourg palace has been the seat of the French Senate of the Fifth Republic.