In 2008, Metro Transit Assassins set a Guinness record with massive “MTA” letters in the LA Riverbed: 1,700 ft × 57 ft, 96,900 sq ft. 300 gal white + 100 gal black. Cost the city $3.7M to remove. Top 5 biggest graffiti ever ➤Bombing Science @BombingScience · 2026-01-23