The octagonal Place de la Concorde is the largest square in Paris. It is situated between the Tuileries and the Champs-Elysées. In 1763, a large statue of king Louis XV was erected at this site to celebrate the recovery of the king after a serious illness. The square surrounding the statue was created later, in 1772, by the architect Jacques-Ange Gabriel. It was known as the place Louis XV.
In 1792, during the French revolution, the statue was replaced by a another, large statue, called Liberté (freedom) and the square was called Place de la Révolution. A guillotine was installed at the center of the square and in a time span of only a couple of years, 1119 people were beheaded here. Amongst them many famous people like King Louis XVI, Marie-Antionette, and Obelisk at Place de la Concorde, Paris revolutionary Robespierre, just to name a few. After the revolution the square was renamed several times until 1830, when it was given the current name Place de la Concorde.
In the 19th century the 3200 years old obelisk from the temple of Ramses II at Thebes was installed at the center of the Place de la Concorde. It is a 23 meters tall monolith in pink granite and weighs approximately 230 tons. In 1831, it was offered by the Viceroy of Egypt to Louis Philippe. The obelisk is covered with hieroglyphs picturing the reign of pharaohs Ramses II & Ramses III. Pictures on the pedestal describe the transportation to Paris and its installation at the square in 1836.
At each corner of the octagonal square is a statue representing a French city: Bordeaux, Brest, Lille, Lyon, Marseille, Nantes, Rouen and Strasbourg. They were installed in 1836 by Jacob Ignaz Hittorf, who redesigned the Place de la Concorde between 1833 and 1846. That same year a bronze fountain, called La fontaine des Mers was added to the square. A second one, the Elevation of the Maritime fountain, was installed in 1839. Both fountains were designed by Hittorf.References:
The Externsteine (Extern stones) is a distinctive sandstone rock formation located in the Teutoburg Forest, near the town of Horn-Bad Meinberg. The formation is a tor consisting of several tall, narrow columns of rock which rise abruptly from the surrounding wooded hills. Archaeological excavations have yielded some Upper Paleolithic stone tools dating to about 10,700 BC from 9,600 BC.
In a popular tradition going back to an idea proposed to Hermann Hamelmann in 1564, the Externsteine are identified as a sacred site of the pagan Saxons, and the location of the Irminsul (sacral pillar-like object in German paganism) idol reportedly destroyed by Charlemagne; there is however no archaeological evidence that would confirm the site's use during the relevant period.
The stones were used as the site of a hermitage in the Middle Ages, and by at least the high medieval period were the site of a Christian chapel. The Externsteine relief is a medieval depiction of the Descent from the Cross. It remains controversial whether the site was already used for Christian worship in the 8th to early 10th centuries.
The Externsteine gained prominence when Völkisch and nationalistic scholars took an interest in the late 19th and early 20th centuries. This interest peaked under the Nazi regime, when the Externsteine became a focus of nazi propaganda. Today, they remain a popular tourist destination and also continue to attract Neo-Pagans and Neo-Nazis.