Salam -- the Arabic word for peace -- is spelled out across the roofs of buildings in the Bab-al-Tibbaneh and Jabal Mohsen neighborhoods of Tripoli, Lebanon.
The project was created and overseen by graffiti artists Mohamed and Omar Kabbani.
The identical twin brothers from the Lebanese capital of Beirut spent three years planning the project.
Omar (left) and Mohamed Kabbani on a rooftop in Tripoli.
The pair chose Bab-al-Tibbaneh and Jabal Mohsen as the location for Operation Salam given the history of sectarian violence between the two neighborhoods.
Bab-al-Tibbaneh is majority Sunni Muslim while Jabal Mohsen is predominantly Alawite Muslim.
Many buildings in the neighborhoods remain pockmarked with bullet holes from fighting which has flared over the years.
Mohamed (right) and Omar Kabbani look at plans for their Operation Salam artwork.
Spread over 1.8 kilometers (1.1 miles) and 85 structures, Operation Salam was completed at the end of October.
A birds eye view of Operation Salam during painting.
The Kabbani brothers were helped by about 50 local residents.
Men paint a roof in the city of Tripoli, Lebanon, as part of the Operation Salam graffiti project.
Mohamed and Omar Kabbani say the word "salam" is synonymous with tolerance, enlightenment and prosperity -- qualities they hope their country will see more of in the near future.