Title: CN Tower
Content:   The CN Tower consists of several substructures. The main portion of the tower is a hollow concrete hexagonal pillar containing the stairwells and power and plumbing connections. The tower's six elevators are located in the three inverted angles created by the Tower's hexagonal shape (two elevators per angle). Each of the three elevator shafts is lined with glass, allowing for views of the city as the glass-windowed elevators make their way through the tower. The stairwell was originally located in one of these angles (the one facing north), but was moved into the central hollow of the tower; the tower's new fifth and sixth elevators were placed in the hexagonal angle that once contained the stairwell. On 
Title: CN Tower
Content:  revolving restaurant that completes a full rotation once every 72 minutes, is at 351 m. When the tower first opened, it also featured a disco named Sparkles (at the Indoor Observation Level), billed as the highest disco and dance floor in the world. The SkyPod was once the highest public observation deck in the world until it was surpassed by the Shanghai World Financial Center in 2008. A metal staircase reaches the main deck level after 1,776 steps, and the SkyPod 100 m above after 2,579 steps; it is the tallest metal staircase on Earth. These stairs are intended for emergency use only and are not open to the public, except for twice per year for 
Title: CN Tower
Content:  stair-climb events. The average climber takes approximately 30 minutes to climb to the base of the radome, but the fastest climb on record is 7 minutes and 52 seconds in 1989 by Brendan Keenoy, an Ontario Provincial Police officer. In 2002, Canadian Olympian and Paralympic champion Jeff Adams climbed the stairs of the tower in a specially designed wheelchair. The stairs were originally on one of the three sides of the tower (facing north), with a glass view, but these were later replaced with the third elevator pair and the stairs were moved to the inside of the core. Top climbs on the new, windowless stairwell used since around 2003 have generally been over ten minutes.
Title: CN Tower
Content:  longer possible. CN intended to rent "hub" space for microwave links, visible from almost any building in the Toronto area. The original plan for the tower envisioned a tripod consisting of three independent cylindrical "pillars" linked at various heights by structural bridges. Had it been built, this design would have been considerably shorter, with the metal antenna located roughly where the concrete section between the main level and the SkyPod lies today. As the design effort continued, it evolved into the current design with a single continuous hexagonal core to the SkyPod, with three support legs blended into the hexagon below the main level, forming a large 
Title: CN Tower
Content:  The CN Tower (Tour CN) is a 553.3 m concrete communications and observation tower located in the downtown core of Toronto, Ontario, Canada. Built on the former Railway Lands, it was completed in 1976. Its name "CN" originally referred to Canadian National, the railway company that built the tower. Following the railway's decision to divest non-core freight railway assets prior to the company's privatization in 1995, it transferred the tower to the Canada Lands Company, a federal Crown corporation responsible for real estate development. The CN Tower held the record for the world's tallest free-standing structure for 32 years until 2007 when it was surpassed by the Burj Khalifa, and was the world's tallest tower until 2009 when it was surpassed by the Canton Tower. It is now the ninth tallest free-standing structure in the world and remains the tallest free-standing structure on land in the Western Hemisphere. In 1995, the CN Tower was declared one of the modern Seven Wonders of the World by the American Society of Civil Engineers. It also belongs to the World Federation of Great Towers. It is a signature icon of Toronto's skyline and attracts more than two million international visitors annually.
Title: CN Tower
Content:  When the CN Tower opened in 1976, there were three public observation points: the SkyPod (then known as the Space Deck) that stands at 447 m, the Indoor Observation Level (later named Indoor Lookout Level) at 346 m, and the Outdoor Observation Terrace (at the same level as the Glass Floor) at 342 m. One floor above the Indoor Observation Level was the Top of Toronto Restaurant, which completed a revolution once every 72 minutes. The tower would garner world wide media attention when stuntman Dar Robinson jumped off of the CN Tower on two occasions in 1979 and 1980. The first was for a scene from the movie Highpoint, in which Robinson received $250,000 ($ in dollars) for the stunt. The second was for a personal documentary. Both stunts used a wire decelerator attached to his back. On June 26, 1986, the ten-year anniversary of the tower's opening, high-rise firefighting and rescue advocate Dan Goodwin, in a sponsored publicity event, used his hands and feet to climb the outside of the tower, a feat he performed twice on the same day. Following both ascents, he used multiple rappels to descend to the ground.
Title: Tourism in Toronto
Content:  The CN Tower is Canada's National Tower, and it is one of the attractions that is open 364 days a year. It is visited by approximately 2 million people every year. In 1995, the CN Tower was classified as one of the Seven Wonders of the Modern World by the American Society of Civil Engineers, and for more than 30 years it was the world's tallest free-standing structure. The CN Tower consists of many inner attractions like the Glass Floor, SkyPod, 360 restaurant and EdgeWalk. EdgeWalk is a full circle hands-free walk on a 5 feet wide ledge encircling the top of the Tower, which is 1,168 feet aboveground. It has also been mentioned in the Guinness Book of World Records for the highest external walk on a building. Also, the CN Tower provides various services for individuals with disabilities and special needs.
Title: CN Tower
Content:  twelve giant steel and wooden bracket forms were slowly raised, ultimately taking about a week to crawl up to their final position. These forms were used to create the brackets that support the main level, as well as a base for the construction of the main level itself. The Space Deck (currently named SkyPod) was built of concrete poured into a wooden frame attached to rebar at the lower level deck, and then reinforced with a large steel compression band around the outside. While still under construction, the CN Tower officially became the world's tallest free-standing structure on March 31, 1975. The antenna 
Title: CN Tower
Content:  of the main concrete portion of the tower is a 102 m tall metal broadcast antenna, carrying television and radio signals. There are three visitor areas: the Glass Floor and Outdoor Observation Terrace, which are both located at an elevation of 342 m, the Indoor Lookout Level (formerly known as "Indoor Observation Level") located at 346 m, and the higher SkyPod (formerly known as "Space Deck") at 446.5 m, just below the metal antenna. The hexagonal shape is visible between the two areas; however, below the main deck, three large supporting legs give the tower the appearance of a large tripod. The main deck level has seven storeys, some of which are open to the public. 
Title: CN Tower
Content:  the building, a conversion that also added nine stairs to the climb. TrizecHahn also owned the Willis Tower (Sears Tower at the time) in Chicago approximately at the same time. In 2007, light-emitting diode (LED) lights replaced the incandescent lights that lit the CN Tower at night, the reason cited being that LED lights are more cost and energy efficient than the incandescent lights. The colour of the LED lights can change, compared to the constant white colour of the incandescent lights. On September 12, 2007, Burj Khalifa, then under construction and known as Burj Dubai, surpassed the CN Tower as the world's tallest free-standing structure. In 2008, glass panels were installed in one of the CN Tower elevators, which established a world record (346 m) for highest glass floor panelled elevator in the world.

Question: how many steps does the cn tower have?
Answer: 2,579 steps.
2,579.