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,
Louvre Palace distinctly non-French flat roof, it was a ground-breaking departure in French architecture. The severe design was chosen over a design provided by the great Italian architect Bernini, who had journeyed to Paris specifically to work on the Louvre. Perrault had translated the Roman architect Vitruvius into French. Now Perrault's rhythmical paired columns form a shadowed colonnade with a central pedimented triumphal arch entrance raised on a high, rather defensive base, in a restrained classicizing baroque manner that has provided models for grand edifices in Europe and America for centuries. The Metropolitan Museum in New York, for one example, reflects Perrault's