# Millenium Park 7 

This magnificent modern park with state-of-the-art facilities, unique public artwork, and beautiful gardens, is well-known for its architecture and landscape design.

Park Surface: 24.5 acres / 99 m2, opened 2004

by J. Crocker / CC BY-SA 3.0

# Willis Tower (former Sears Tower) 6

Formerly known as Sears Tower, this 108-story skyscraper offers sweeping 360° views of the city from its Skydeck at 1,353 ft or 412 m.

At the time the Sears Tower was constructed in 1974, it was the world's tallest building until it was replaced in 1997 by Kuala Lumpur's Petronas Towers. 

Skyscraper Total Height: total 527 m | Observation Deck: 412 m | Completed: 1973

# Museum of Science and Industry (MSI) 6 

Housed in a beautiful Beaux-Arts building, this museum is the largest science museum in the Western Hemisphere. It features interactive exhibits, a full-size replica coal mine, the German submarine U-505, a 3,500-square-foot (330 m2) model railroad, and the command module of Apollo 8.

Museum Surface: 37,000 square meters | Established: 1933

by JeremyA / CC BY-SA 2.5

# John G. Shedd Aquarium 6 

The world-class John G. Shedd Aquarium, the oldest entry in our list of the best aquariums in the world (it opened in 1930), shows its age compared to its successors. It was the first inland aquarium with a permanent saltwater fish collection.

Moreover, it contains none less than 1500 species including arapaima, marine mammals, birds, snakes, amphibians, and insects.

In 1991, the John G. Shedd Aquarium opened the Oceanarium (known since 2010 as the Abbott Oceanarium), a large addition that features marine mammals, including Pacific white-sided dolphins, belugas, sea otters, and sea lions, as well as penguins.

Aquarium Biggest Tank: 7.6 million liters | Total Water Volume: 18.9 million liters | Species: 1,500 | Established: 1930 | Rank in Our List of the Best Aquariums in the World: No 11

by Chris6d / CC BY-SA 4.0

# Field Museum of Natural History 6 

Housed in a neo-Classical building, this world-renowned institution features seventeen permanent exhibitions and several temporary exhibitions. The museum features "Sue," the world's largest, most complete Tyrannosaurus Rex skeleton.

Natural History Museum

by KiwiDeaP / CC BY-SA 3.0

# John Hancock Center with Skydeck 6 

Located on the shore of Lake Michigan, from the Observatory on the 94th floor, which features an open-air skywalk, you can enjoy wonderful panoramic views of the entire city.

Skyscraper Height: 344 m [1,127 ft]; Observation Deck: 304 m [1,000 feet] | Completed: 1968

by JeremyA / CC BY-SA 2.5

# Lincoln Park and Zoo 6 

Considered one of the best in the US, this beautifully landscaped free zoo is home to dozens of species, such as polar bears, gorillas and chimpanzees, sloths, and hippos.

Park and Zoo Free Established: 1868 | Surface: 35-acre

by Chris6d / CC BY-SA 4.0

# Chicago River 6 

The mile-long pedestrian Riverwalk that runs along the south bank of the Chicago River is one of the city's finest recreational areas. Furthermore, you can enjoy the city’s most celebrated landmarks on an Architectural River Cruise.

River | Park

by Aaron Robert Bourque / CC BY-SA 4.0