2. Museum of Science and Industry

The Museum of Science and Industry is known as the largest science center in the Western Hemisphere. In the center of the Hyde Park space, the main floor, rotunda, and balcony are connected and provide direct access to exhibits including "Science Storms," "The Great Train Story," and "You! The Experience." With 233,852 square feet of space, the area can host receptions for 5,000 guests.
Photo: JB Spector/Museum of Science and Industry
5. Aragon Ballroom

In Uptown, Aragon Ballroom was completed in the 1920s. Designed to evoke the courtyard of a Spanish palace, the space is decked with mosaic tiles, palm trees, and glowing stars embedded in the ceiling. In its 20,000-square-foot central space, the venue can host gatherings for 4,800 guests.
Photo: Courtesy of Groupon

The teepee-style tents can hold as many as 400 people.
Photo: Carl Sadd