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 least one announcement reading "Free entrance offered by the archeologists" has been attached to the ticket desk and a number of people visited the museum free of charge. The Louvre is owned by the French government; however, since the 1990s it has become more independent. Since 2003, the museum has been required to generate funds for projects. By 2006, government funds had dipped from 75 percent of the total budget to 62 percent. Every year, the Louvre now raises as much as it gets from the state, about €122 million. The government pays for operating costs (salaries, safety and maintenance),