The word **mural** derives from the simplest of Latin sources — *murus*, a wall — yet names one of the most ancient, ambitious, and politically potent art forms in human history.
## Latin Origin
*Muralis* in Latin meant simply "of or relating to a wall." The *corona muralis* (mural crown) was a gold crown given to the first Roman soldier to scale an enemy's wall — a supreme military honor. Latin *murus* derives from PIE *mey-* (to fix, to build), and its English descendants include *immure* (to wall up, to imprison), *intramural* (within the walls), and *extramural* (outside the walls).
## Prehistoric Murals
Although the word is Latin, the art form it describes is prehistoric. The cave paintings at Lascaux (approximately 17,000 years old), Altamira (approximately 36,000 years old), and Chauvet (approximately 32,000 years old) are, technically, murals — pigment applied directly to wall and ceiling surfaces. These Paleolithic works demonstrate that the impulse to decorate walls with images is among the oldest human artistic behaviors.
## Roman and Medieval Tradition
Roman murals (often classified more specifically as frescoes, from Italian *affresco*, meaning "on fresh" plaster) decorated homes throughout the Empire, with the best-preserved examples surviving in Pompeii and Herculaneum. Medieval churches continued the tradition, covering walls and ceilings with religious narratives intended to educate and inspire largely illiterate congregations. The Sistine Chapel ceiling, painted by Michelangelo between 1508 and 1512, represents perhaps the supreme achievement of the mural tradition.
## Mexican Muralism
The early 20th century saw the mural reborn as a vehicle for political expression. The Mexican muralism movement, launched after the Mexican Revolution, used large-scale public wall paintings to educate, inspire, and mobilize. Diego Rivera, David Alfaro Siqueiros, and José Clemente Orozco created monumental works in government buildings, schools, and public spaces that depicted Mexican history, social struggle, and revolutionary ideals. Their work influenced
## Community Murals
The community mural movement that emerged in the 1960s and 1970s, particularly in American cities, extended the Mexican muralists' democratic vision. Neighborhood murals, created collaboratively by artists and community members, became expressions of local identity, cultural pride, and social commentary. From the murals of Philadelphia to the political wall paintings of Belfast and the graffiti-murals of São Paulo, the form has proved endlessly adaptable to local contexts and concerns.
Contemporary street art — including large-scale works by artists like Banksy, Shepard Fairey, and JR — continues the mural tradition in new forms. The line between mural and street art has blurred, with commissioned murals and unsanctioned street art occupying the same urban surfaces. The word *mural* has expanded to encompass this full range of wall-based art, from ancient cave paintings to Instagram-worthy urban installations.