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,
Tourism in Paris Paris Office of Tourism) Tourism in Paris Tourism in Paris is a major income source. In 2017, 33.8 million tourists visited the city and her region. The city remains year after year the most visited one in the world ahead of London and New York City. The top reason to come are sightseeing and shopping. The city is the largest Airbnb market in the world. Top sights: Notre Dame (12 million visitors in 2017), Disneyland Paris (11), Sacre Coeur (10), Versailles Palace (7.7), the Louvre Museum (6.9), the Eiffel Tower (5.9), Centre Pompidou (3.33), Musee d'Orsay (3). In the Paris