A by-the-numbers look at the most graffitied national parks.

Slogans against America are being erased from walls on the street of Tehran, Iranian media has reported in recent days. Iranian news sites have published pictures of a person wiping off graffiti that reads,"Death to America," also from the walls of where the US embassy was formerly located prior to its closure after the Islamic Revolution of 1979.

Street artist may be preparing pop-up exhibition in seaside town. By Steven Morris.

Public toilets were famously popular in Roman Empire. Romans were also fond of graffiti. The fact that people scribble stuff on bathroom walls is thus a historical inevitability. Romans, Mayans, Vikings and Varangians all left their names or funny sayings wherever they went. Hagia Sophia still bears the name of Halvdan, who carved it while in the employ of the Byzantine emperor. It's only natural that bathroom goers would do the same.

Calculated correctors, this team of vigilante street art fixers patrols for grammatical mistakes then regroups to decide on edits before hitting the streets of Quito, Ecuador, to deploy them.

By this point, drones have been co-opted into most human activities: proposals, religion, and yep, porn. As of Wednesday morning, you can also add vandalising a gigantic NYC billboard to that list. As Wired reports, well-known graffiti artist KATSU has been working on his plan to scribble on billboards for a while. The benefits are obvious: quick access to any part of a building, near-immunity from the cops, and the fun of strapping a spray-paint can to a flying object.

A youth organizations that's been known to use graffiti as a means of expression has teamed up with the government of Mexico to rehabilitate Palmitas, in the Pachuca district. Under the moniker Germen Crew, the group painted 209 houses, or twenty-thousand square meters of facade, into a single mural.

Banksy may have made a name for himself with his iconic street art, but Brazilian artist Butcher Billy is giving us a new take on the graffitist's work with some equally iconic characters.

Graffiti etched into walls of the ancient city of Aphrodisias reveals life some 1,500 years ago, including gladiator combat, chariot racing and religious fighting.

The book Street Messages by artist and photographer Nicholas Ganz documents street-art slogans worldwide, from Norway to Guatemala City

In the early hours of Wednesday morning, the age of robotic graffiti was born. KATSU, a well-known graffiti artist and vandal, used a hacked Phantom drone to paint a giant red scribble across Kendall Jenner’s face on one of New York City’s largest and most viewed billboards. By all accounts, it is the first time that a drone has been deployed for a major act of public vandalism. In April last year, KATSU made headlines when he demonstrated that he had figured out how to attach a spray can...

Anti-graffiti enforcement is expensive. By one estimate, the U.S. spends between 15 and 18 billion dollars a year to “monitor, detect, remove, and repair graffiti damage.” Around the world, laws vary. In this week’s City Index, we found cities that want to scare the hell out of people with draconian laws and cities that are questioning the wisdom of trying to police graffiti at all. These are some of their harshest penalties for graffiti.

The elusive graffiti artist Banksy has reemerged among Palestinian ruins to give his instantly recognizable stenciling style a meaningful backdrop. A politically charged travelogue of a war-ravaged neighborhood appeared on his YouTube channel late Wednesday with the title "Make this the year YOU discover a new destination.” The footage shows Palestinian civilians standing among the devastation of war as darkly satirical captions appear.

Guy removing graffiti is the subject of the next graffiti in the same spot as the removed graffiti

Here are some fabulous inspirational graffiti alphabet examples that will let beginners and pros release their creative juices in graffiti art.

Editing Famous painting

When Frankfurt social worker Stefan Mohr needed a new location for the troubled children he works with to express themselves through spray paint and graffiti, it did not take him long to find a potential site. The trouble was, the vast area of fencing he found, down the road from the derelict warehouse the children had been using, was round the site on which the European Central Bank's new €1bn headquarters was being built.

Banksy’s month-long New York residency might as well have been entitled, ‘The Banksy rehabilitation program.’ In coming to New York, the artist wasn’t simply courting a new American audience. He so...