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Observation decks

The 80th, 86th, and 102nd floors contain observatories. The latter two observatories saw a combined average of four million visitors per year in 2010. Since opening, the observatories have been more popular than similar observatories at 30 Rockefeller Plaza, the Chrysler Building, the first One World Trade Center, or the Woolworth Building, despite being more expensive. There are variable charges to enter the observatories; one ticket allows visitors to go as high as the 86th floor, and there is an additional charge to visit the 102nd floor. Other ticket options for visitors include scheduled access to view the sunrise from the observatory, a "premium" guided tour with VIP access, and the "AM/PM" package which allows for two visits in the same day.

The 86th floor observatory contains both an enclosed viewing gallery and an open-air outdoor viewing area, allowing for it to remain open 365 days a year regardless of the weather. The 102nd floor observatory is completely enclosed and much smaller in size. The 102nd floor observatory was closed to the public from the late 1990s to 2005 due to limited viewing capacity and long lines. The observation decks were redesigned in mid-1979. The 102nd floor was again redesigned in a project that was completed in 2019, allowing the windows to be extended from floor to ceiling and widening the space in the observatory overall. An observatory on the 80th floor, opened in 2019, includes various exhibits as well as a mural of the skyline drawn by British artist Stephen Wiltshire. An interactive multimedia museum, with multiple hands-on exhibitions about the building's history, was added during this project. The design of the 10,000 sq ft (930 m) Observatory Experience was inspired by the plans and designs of the original Empire State Building.

According to a 2010 report by Concierge.com, the five lines to enter the observation decks are "as legendary as the building itself". Concierge.com stated that there were five lines: the sidewalk line, the lobby elevator line, the ticket purchase line, the second elevator line, and the line to get off the elevator and onto the observation deck. In 2016, New York City's official tourism website made note of only three lines: the security check line, the ticket purchase line, and the second elevator line. Following renovations completed in 2019, designed to streamline queuing and reduce wait times, guests enter from a single entrance on 34th Street, where they make their way through 10,000-square-foot (930 m) exhibits on their way up to the observatories. Guests were offered a variety of ticket packages, including a package that enables them to skip the lines throughout the duration of their stay. The Empire State Building garners significant revenue from ticket sales for its observation decks, making more money from ticket sales than it does from renting office space during some years.