Editing Infinite Corridor (section)

==Geography==
===Entrance===
An outside grand stairway leads up from [[Massachusetts Avenue (Cambridge)|Massachusetts Avenue]]  to Lobby 7, the main entrance to the Infinite Corridor.  This location is often called "77 MassAve", an abbreviation of its official street address; the street itself forms the western boundary of the main or central campus.   The MIT Student Center (Building W20) is located directly across the street, at 84 Massachusetts Avenue.

Nearby bus stops serve [[MBTA]] buses from [[Harvard Square]], and from [[Back Bay]] across the [[Charles River]] via the [[Harvard Bridge]], as well as various [[shuttle bus]]es.  [[Food truck|Food vendor trucks]] often park in designated spaces near the entrance.

===Lobby 7===
[[File:MIT Lobby 7.jpg|thumb|upright|MIT Lobby 7, viewed looking up at the interior of the Little Dome]]
Lobby 7, so named because of its location in Building 7 (formally named the '''Rogers Building'''), is a large {{convert|100|ft|m|sp=us|adj=on}} vertical space open all the way up to the interior of the '''Little Dome'''.  A carved inscription<ref>ESTABLISHED FOR ADVANCEMENT AND DEVELOPMENT OF SCIENCE ITS APPLICATION TO INDVSTRY THE ARTS AGRICVLTURE AND COMMERCE CHARTER MDCCCLXI [carved in [[Roman square capitals]] without punctuation]</ref> circles the space just below the base of the Little Dome. Four empty pedestals occupy the corners of the square lobby; they were originally intended for large [[Sculpture#North America|Neoclassical figural sculptures]], but are instead often occupied by students studying, or occasionally playing live music. The Infinite Corridor begins straight ahead through the lobby, on the opposite side from the street.

During the 1970s, two large pillars flanking the entrance to the Infinite Corridor were partially wrapped in paper and used by the liberal "Alternative Advertising" and somewhat less liberal "Pillar Productions" where students would scrawl responses to issues of the day such as nuclear power or whether [[Disco Sucks|disco sucked]]. A display of [[United States Air Force|Air Force]] art was once withdrawn after vandalism in the lobby.{{Citation needed|date=April 2011}}

Lobby 7 is frequently used for formally scheduled or impromptu concerts, as well as dance performances. Occasionally, "[[performance art]]" hacks or [[installation art]] hacks are sited in Lobby 7. Banners advertising campus events are often hung from the upper levels of Lobby 7, including the occasional hack banner such as "Don't let the Grinch steal your Christmas" (in reference to complaints about the campus [[Christmas tree]]).  The cavernous interior space of Lobby 7 is frequently the site of hacks that require a large volume of unobstructed indoor space.<ref name=HackLobby7>{{cite web|title=Hacks In Lobby 7 and the Infinite Corridor|url=http://hacks.mit.edu/Hacks/by_location/inf_corridor.html|work=MIT IHTFP Hack Gallery|access-date=2011-05-02}}</ref>

===Memorial Lobby (Lobby 10)===
A two-story atrium space at the half-way point of the corridor, informally known as '''Lobby 10''', is part of the '''MacLaurin Buildings''' in Building 10, underneath the '''Great Dome'''. In this space, it is quite common to find several booths or tables advertising upcoming events, or students engaged in other public activities and demonstrations, such as [[juggling]] or dancing.  Often, there are fund-raising activities, such as selling [[used books]], tickets for shows or concerts, artworks made in the MIT GlassLab or Student Art Association, or [[Chinese bakery products|Chinese pastries]] and other [[snack]]s.

On November 18, 2013 a formal dedication ceremony was held to rename the space '''Memorial Lobby'''. The [[travertine]] walls bear the engraved names of [[MIT alumni]] who died in each of several wars, and these inscriptions have been [[gilding|re-gilded]] to make them more readable.<ref name=Chandler>{{cite news|last=Chandler|first=David L.|title=MIT's Lobby 10 to be renamed in honor of fallen veterans|url=http://newsoffice.mit.edu/2013/mit-memorial-lobby-1108|access-date=2014-05-17|newspaper=MIT News|date=November 8, 2013}}</ref>

===Different levels===
The Infinite Corridor has five levels: the basement, and floors 1 through 4. Elevators in Lobby 7 and in Lobby 10 provide access to each floor, as do numerous stairways.  The elevators in Lobby 10 also provide access to the Barker Engineering Library, via the 5th floor.  In accordance with its US location, MIT buildings usually use the American [[floor numbering]] scheme.

The first floor (called the "ground floor" by some) is the most traveled level, and is often the only one referred to as ''the'' Infinite Corridor. It is most of a floor above ground level at Massachusetts Avenue (the west end, Building 7), and in areas is a full floor up, with a [[parking lot]] entrance passing underneath (this entrance crosses the basement-level corridor at grade between Buildings 7 and 3). At its east end in Building 8, it is also about half a floor up.  The Basement Infinite Corridor mirrors the first floor passage, but connects to the extensive below-grade system of tunnels connecting many buildings.