Although the college quad first became associated with academia on the campuses of Oxford and Cambridge, most of America's great universities now feature a central space surrounded by residence halls and classrooms.

Many of these collegiate spaces appear on the US National Register of Historic Places and are considered among the most iconic examples of American architecture and design.

We've compiled a list of some of the most beautiful and iconic examples of American campus quads:

Harvard University — Harvard Yard

Harvard Yard is the oldest part of Harvard's campus, and the buildings surrounding it include freshman residence halls and some of the school's main libraries.

University of Alabama — The Quad

The Quad at the center of UA's campus once hosted football games, but now might be best known as the home of Denny Chimes, a 115-foot tower.

Cornell University — Arts Quad

Cornell's Arts Quad is the academic home of the Arts and Sciences college, and is watched over by two statues of the university's founders, Ezra Cornell and A.D. White.

University of Virginia — The Lawn

The Lawn at UVA was designed by school founder Thomas Jefferson, and the Rotunda at the north-end of the quad was inspired by the Pantheon in Rome.

University of Missouri — Francis Quadrangle

Mizzou's Francis Quadrangle — known on campus as The Quad — features two of the school's most recognizable structures, Jesse Hall and The Columns.

Yale University — Branford Courtyard

The courtyard of Yale's Branford residential college is considered by many — including, reportedly, poet Robert Frost — to be one of the most beautiful spaces of any college in America.

University of Washington — The Quad

The UW Quad is known for the scenic cherry trees that bloom in the springtime, bringing a beautiful light pink overtone to campus.

Massachusetts Institute of Technology — Killian Court

The center of MIT's Killian Court is the Great Dome, which is surrounded by marble buildings engraved with the names of prominent thinkers and philosophers.

University of Pennsylvania — The Quad

The UPenn Quad hosts the majority of freshman residence halls and is the most desirable place to live your first year on campus.

University of Maryland — McKeldin Mall

UMD's McKeldin Mall is flanked on either end by the school's main library and a statue of its mascot — Testudo — a diamondback terrapin turtle.

Stanford University — Main Quad

The Main Quad is home to the Stanford Memorial Church, considered to be the earliest nondenominational church on the West Coast.

University of Wisconsin–Madison — Bascom Hill

Bascom Hill is actually a drumlin — literally a "small hill" — that was likely formed by a glacier 20,000 years ago.

University of Michigan — The Diag

The Diag — known for the diagonal walkways that cut through the square — is a central meeting place at UMich.

University of Illinois at Urbana-Champaign — Main Quad

The UIUC Main Quad houses Foellinger Auditorium, a concert space and lecture hall that can seat over 1,500 students.

University of Texas at Austin — South Lawn

High above the UT South Lawn stands The Tower, a 30-floor structure that is one of the most recognizable buildings on campus.

Southern Methodist University — Main Quad

A hundred years old this year, SMU's Dallas Hall is named in recognition to the city that houses the university and is modeled on UVA's Georgian-inspired architecture.