Willis Tower Skydeck and its glass ledge above Chicago

High above the streets of Chicago, the observation deck known as Skydeck crowns Willis Tower with a viewing platform and glass-floored ledges that hang over the city’s grid of streets. Completed as Sears Tower in the early 1970s, this steel-framed skyscraper became a defining element of the Chicago skyline and remains a focal point for visitors who want to see the city and the wider landscape of the Midwest from more than 400 m (over 1,300 ft) above the ground.

A vertical landmark and a viewing deck

Willis Tower stands in Chicago’s Loop district as a tall office skyscraper, rising to a structural height of around 1,450 ft, with its roof more than 440 m above street level.With 108 floors and a height of 1,451 ft (442 m) the building was completed in 1973 for the Sears Roebuck company and held the title of the world’s tallest building in the mid-1970s.The tower, formerly known as Sears Tower, opened in 1973 The structure groups several rectangular shafts into a bundled form, giving the tower a stepped outline that rises over the surrounding blocks and sets the stage for the Skydeck near its top.

The Skydeck itself occupies the 103rd floor of Willis Tower, positioned at around 1,353 ft (about 412 m) above the pavements of South Wacker Drive.The Skydeck observation deck on the 103rd floor is 1,353 feet above ground Inside, visitors step out from the lift lobby into an enclosed viewing area with wide windows facing in several directions, giving long views over Chicago’s street grid, Lake Michigan and, on clear days, the wider region beyond the city’s limits.The Skydeck is 1,353 feet (412 meters) above the ground The elevation turns everyday features into a pattern: railway lines become fine threads, bridges and expressways form straight lines and curves, and the patchwork of neighbourhoods stretches towards the horizon.

The Ledge: glass boxes suspended over the city

What gives the Skydeck its distinctive character is The Ledge, a set of glass-floored boxes that project beyond the face of the skyscraper on the west side. These transparent structures were added to the deck in 2009, decades after the tower itself opened, as part of a renovation that reshaped the visitor experience on the 103rd floor.In the early 21st century the Skydeck underwent a renovation that included the addition of the Ledge Each of the boxes is formed from thick panels of laminated glass on its sides, floor and ceiling, turning the view downwards into a central feature of the visit.

The Ledge extends several feet out from the Skydeck level, cantilevered from the tower’s frame so that visitors stand wholly over the drop to the streets below.The glass boxes of the Ledge extend out 4.5 feet from the Skydeck Because the floor is transparent, the regular pattern of Chicago’s blocks appears directly beneath the visitor’s feet, with junctions, river bridges and the roofs of neighbouring buildings forming a detailed view that is unusual to see from any height, let alone more than 400 m above street level.At 1,353 feet up, The Ledge’s glass boxes extend out from the skyscraper’s Skydeck on the 103rd floor From inside one of these boxes, it is possible to look sideways to other ledges, back into the enclosed deck and out towards the expanse of Lake Michigan, contrasting the verticality of the tower with the horizontal spread of water and streets.

Chicago, the Midwest and the view from above

The setting of Willis Tower and its Skydeck is as much a part of the experience as the glass boxes themselves. The tower stands on South Wacker Drive in the Loop, close to the Chicago River and the dense cluster of office blocks that make up the central business district.Location 233 S. Wacker Drive Chicago, Illinois From the 103rd floor, the river’s bends, the outline of the lakefront and the straight lines of major roads are all visible as part of a broad panorama.

On days with clear visibility, the view from the Skydeck stretches far beyond Chicago’s municipal boundary, taking in parts of several states around Lake Michigan.On a clear day, you can see four states – Illinois, Indiana, Wisconsin and Michigan The horizon forms a low band in the distance, while nearer landmarks such as the Chicago River, the lake shoreline and other skyscrapers help visitors orientate themselves in relation to the streets they may have walked earlier that day. Because the deck is enclosed, the space functions as a high-level room with city views rather than an open terrace, yet the glass-ledged boxes bring an immediate connection to the height. Together, the Skydeck and The Ledge present Chicago as both an abstract pattern viewed from above and a lived-in city with rail yards, waterfront and neighbourhoods that remain recognisable even at this scale.

Visiting Willis Tower Skydeck: what travellers from Western Europe should know

• Willis Tower stands on South Wacker Drive in Chicago’s Loop, a central district served by suburban and metro rail lines and by city buses.
• The approach to the Skydeck involves lift travel to the 103rd floor and movement through indoor spaces, with level flooring on the deck and solid barriers around The Ledge.
• The surrounding area includes the Chicago River and a dense cluster of office towers, so many other downtown landmarks lie within walking distance at street level.
• For this site, the official language is English and the currency is the United States dollar.
• Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.

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Frequently asked questions about Willis Tower Skydeck

Where is Willis Tower Skydeck located?

Skydeck is on the 103rd floor of Willis Tower, an office skyscraper at 233 South Wacker Drive in Chicago’s Loop district.

What can visitors expect during a visit?

Visitors reach the enclosed deck by lift, walk through indoor exhibition areas and then step onto glass-floored boxes that project over the city’s west side.

What makes Skydeck distinctive among city viewpoints?

The combination of a very high enclosed observation floor and transparent ledges projecting from the tower’s facade gives Skydeck a character that focuses on both height and direct downward views.