Hancock tower skydeck is a search that usually mixes up two different Chicago buildings. The tower that used to carry the Hancock name is not Willis Tower, and its observation deck is not Skydeck. I run into this mix-up often enough with visitors planning their first Chicago trip that it is worth untangling properly before you book the wrong ticket.
Ready to see prices? Chicago CityPASS: Skydeck Plus 4 Top Attractions, from $144 See times Which Building Was Actually Called the John Hancock Center?
The John Hancock Center was the original name of the skyscraper at 875 North Michigan Avenue, built in the early 1970s and instantly recognizable by its distinctive X-braced steel exterior. It is a completely different building from Willis Tower, located several miles north in the Streeterville neighborhood near the Magnificent Mile rather than the Loop. I would not confuse the two just because both once carried corporate sponsor names, since nothing else about their location or style overlaps.
Is the Hancock Center the Same Building as Willis Tower?
No, they are two separate skyscrapers in different parts of Chicago. Willis Tower sits in the Loop at 233 South Wacker Drive and houses Skydeck, while the former Hancock Center sits on North Michigan Avenue and houses what is now called 360 CHICAGO. I would keep a mental map of “Loop equals Willis Tower, Michigan Avenue equals the other one” to avoid mixing them up again.
Why Did the Hancock Name Change?
The building’s official name changed to 875 North Michigan Avenue after the John Hancock Insurance Company’s sponsorship arrangement ended, which is a near-identical story to Willis Tower losing the Sears name when its own sponsorship deal lapsed. I cover that parallel naming history in detail in the full Sears Tower to Willis Tower story, since both renamings confuse searchers in almost the same way.
What Is the Observation Deck at 875 North Michigan Called Now?
The observation deck at 875 North Michigan is now branded 360 CHICAGO, and it still includes the Tilt feature that leans visitors out over Michigan Avenue. I would use the current 360 CHICAGO name when searching for tickets, since older Hancock Observatory branding can lead to outdated listings or expired links.
Want a closer look? Chicago CityPASS: Skydeck Plus 4 Top Attractions, from $144 See timesWhy Do People Still Search for the Hancock Observatory?
Longtime Chicago residents and a lot of older travel content still use the Hancock name out of habit, since the rebrand happened relatively recently in the building’s long history and corporate renamings rarely erase local nicknames overnight. I would not assume a search result using “Hancock” is wrong just because it is outdated. It is usually just old, not inaccurate about which building it means.

How Is 360 CHICAGO Different From Skydeck?
360 CHICAGO sits on the 94th floor at roughly 1,000 feet, while Skydeck sits on Willis Tower’s 103rd floor at 1,353 feet, a gap of about 350 feet in favor of Skydeck. Beyond height, 360 CHICAGO’s signature feature is Tilt, a moving glass platform, compared with Skydeck’s Ledge, which stays fixed in place. I break the whole comparison down, including price and lines, in my full Skydeck vs 360 CHICAGO guide, which is the better next read if you are choosing between the two rather than just clearing up the name.
Does Tilt Exist at Both Buildings?
No, Tilt is exclusive to 360 CHICAGO. Skydeck’s equivalent feature is The Ledge, a set of stationary glass boxes rather than a moving platform. I explain exactly how Tilt’s mechanism works in a closer look at the Tilt feature, which clears up the other half of this naming confusion.
Ready to see prices? Willis Tower Skydeck and The Ledge Ticket, from $47.10 See timesIs Willis Tower Taller Than the Former Hancock Building?
Willis Tower is noticeably taller than the former Hancock tower, by roughly 350 feet measured at observation deck level, and it held the world’s-tallest-building title for about 25 years after it opened. I go deeper into that history and where Willis Tower ranks globally today in a dedicated height ranking page.
Want a closer look? Chicago CityPASS: Skydeck Plus 4 Top Attractions, from $144 See timesMy Take: Which Should You Actually Book?
If a search for the Hancock Observatory brought you here, I would double check which building you actually want tickets for before you check out. Most visitors chasing the name out of nostalgia are picturing the right experience: the 94th-floor deck on Michigan Avenue, now called 360 CHICAGO. But if what you really wanted was the taller, generally cheaper deck in the Loop, that is willis tower tickets, and booking your Willis Tower Skydeck ticket gets you to the 103rd floor instead. I would rather you land on the right building the first time than discover the mix-up after you have already paid for the wrong one.
Short on time? Small Group Tour with Skydeck and River Cruise, from $189 See timesFrequently Asked Questions
Is the John Hancock Observatory the same as Skydeck? No. The Hancock Observatory was the old name for the observation deck at 875 North Michigan Avenue, now called 360 CHICAGO. Skydeck is the separate, taller deck at Willis Tower.
Why do people still call it the Hancock Observatory? The name stuck from before the building’s corporate sponsorship ended, similar to how some visitors still call Willis Tower by its old Sears Tower name.
What replaced the Hancock Observatory name? The observation deck is now branded 360 CHICAGO, located in the building currently addressed as 875 North Michigan Avenue.
Is Willis Tower taller than the old Hancock building? Yes, Willis Tower’s Skydeck sits roughly 350 feet higher than the observation deck at the former Hancock tower.
Ready to see prices? Willis Tower Skydeck and The Ledge Ticket, from $47.10 See times