Museum of Science and Industry (Chicago) of Progress event. For years, visitors entered the museum through its original main entrance, but that entrance became no longer large enough to handle an increasing volume of visitors. The newer main entrance is a structure detached from the main museum building, through which visitors descend into an underground area and re-ascend into the main building, similar to the Louvre Pyramid. In 1983, due to increased attendance, the museum started construction of its underground parking lot, located in three underground levels below the front lawn. Construction of the underground parking lot was finished in the 1990s. For over 55 years,
Paris in the 17th century Paris bridge without houses and with sidewalks. Near the bridge, he built "La Samaritaine" (1602–1608), a large pumping station which provided drinking water, as well as water for the gardens of the Louvre and the Tuileries Gardens. Henry and his builders also decided to add an innovation to the Paris cityscape; three new residential squares, modeled after those in Italian Renaissance cities. On the vacant site of the old royal residence of Henri II, the "Hôtel des Tournelles", he built an elegant new residential square surrounded by brick houses and an arcade. It was built between 1605 and 1612, and