The Grand Palais is an exhibition hall and museum complex located at the Champs-Élysées. Construction of the Grand Palais began in 1897 following the demolition of the Palais de l'Industrie (Palace of Industry) as part of the preparation works for the Universal Exposition of 1900, which also included the creation of the adjacent Petit Palais and Pont Alexandre III.
The structure was built in the style of Beaux-Arts architecture as taught by the École des Beaux-Arts of Paris. The building reflects the movement's taste for ornate decoration through its stone facades, the formality of its floor planning and the use of techniques that were innovative at the time, such as its glass vault, its structure made of iron and light steel framing, and its use of reinforced concrete.
The main space, almost 240 metres long, was constructed with an iron, steel and glass barrel-vaulted roof, making it the last of the large transparent structures inspired by London’s Crystal Palace that were necessary for large gatherings of people before the age of electricity. The main space was originally connected to the other parts of the palace along an east-west axis by a grand staircase in a style combining Classical and Art Nouveau, but the interior layout has since been somewhat modified.
The exterior of this massive palace combines an imposing Classical stone façade with a riot of Art Nouveau ironwork, and a number of allegorical statue groups including work by sculptors Paul Gasq, Camille Lefèvre, Alfred Boucher, Alphonse-Amédée Cordonnier and Raoul Verlet.
The grand inauguration took place 1 May 1900, and from the very beginning the palace was the site of different kinds of shows in addition to the intended art exhibitions. The Palais served also as a military hospital during World War I, employing local artists that had not deployed to the front to decorate hospital rooms or to make moulds for prosthetic limbs.
The Nazis put the Palais to use during the Occupation of France in World War II. First used as a truck depot, the Palais then housed two Nazi propaganda exhibitions. The Parisian resistance used the Grand Palais as a headquarters during the Liberation of Paris. On 23 August 1944 an advancing German column was fired upon from a window on the Avenue de Sèlves, and the Germans responded with a tank attack upon the Palais. The attack ignited hay that was set up for a circus show, and over the next 48 hours, thick black smoke from the fire caused serious damage to the building.References:
The Porta Nigra (Latin for black gate) is the largest Roman city gate north of the Alps. It is designated as part of the Roman Monuments, Cathedral of St. Peter and Church of Our Lady in Trier UNESCO World Heritage Site. The name Porta Nigra originated in the Middle Ages due to the darkened colour of its stone; the original Roman name has not been preserved. Locals commonly refer to the Porta Nigra simply as Porta.
The Porta Nigra was built in grey sandstone between 186 and 200 AD. The original gate consisted of two four-storied towers, projecting as near semicircles on the outer side. A narrow courtyard separated the two gate openings on either side. For unknown reasons, however, the construction of the gate remained unfinished. For example, the stones at the northern (outer) side of the gate were never abraded, and the protruding stones would have made it impossible to install movable gates. Nonetheless, the gate was used for several centuries until the end of the Roman era in Trier.
In Roman times, the Porta Nigra was part of a system of four city gates, one of which stood at each side of the roughly rectangular Roman city. The Porta Nigra guarded the northern entry to the Roman city, while the Porta Alba (White Gate) was built in the east, the Porta Media (Middle Gate) in the south, and the Porta Inclyta (Famous Gate) in the west, next to the Roman bridge across the Moselle. The gates stood at the ends of the two main streets of the Roman Trier, one of which led north-south and the other east-west. Of these gates, only the Porta Nigra still exists today.
In the early Middle Ages the Roman city gates were no longer used for their original function and their stones were taken and reused for other buildings. Also iron and lead braces were broken out of the walls of the Porta Nigra for reuse. Traces of this destruction are still clearly visible on the north side of the gate.
After 1028, the Greek monk Simeon lived as a hermit in the ruins of the Porta Nigra. After his death (1035) and sanctification, the Simeonstift monastery was built next to the Porta Nigra to honor him. Saving it from further destruction, the Porta Nigra was transformed into a church: The inner court of the gate was roofed and intermediate ceilings were inserted. The two middle storeys of the former gate were converted into church naves: the upper storey being for the monks and the lower storey for the general public. The ground floor with the large gates was sealed, and a large outside staircase was constructed alongside the south side (the town side) of the gate, up to the lower storey of the church. A small staircase led further up to the upper storey. The church rooms were accessible through former windows of the western tower of the Porta Nigra that were enlarged to become entrance doors (still visible today). The top floor of the western tower was used as church tower, the eastern tower was leveled, and an apse added at its east side. An additional gate - the much smaller Simeon Gate - was built adjacent to the East side of the Porta Nigra and served as a city gate in medieval times.
In 1802 Napoleon Bonaparte dissolved the church in the Porta Nigra and the monastery beside it, along with the vast majority of Trier"s numerous churches and monasteries. On his visit to Trier in 1804, Napoleon ordered that the Porta Nigra be converted back to its Roman form. Only the apse was kept; but the eastern tower was not rebuilt to its original height. Local legend has it that Napoleon originally wanted to completely tear down the church, but locals convinced him that the church had actually been a Gaulish festival hall before being turned into a church. Another version of the story is that they told him about its Roman origins, persuading him to convert the gate back to its original form.
In 1986 the Porta Nigra was designated a World Heritage Site, along with other Roman monuments in Trier and its surroundings. The modern appearance of the Porta Nigra goes back almost unchanged to the reconstruction ordered by Napoleon. At the south side of the Porta Nigra, remains of Roman columns line the last 100 m of the street leading to the gate. Positioned where they had stood in Roman times, they give a slight impression of the aspect of the original Roman street that was lined with colonnades. The Porta Nigra, including the upper floors, is open to visitors.