Another fire has led to another loss at the Heidelberg Project in Detroit.

Sunday night, flames destroyed the Clock House on Elba Street.

The fire was the eighth in seven months at the outdoor art installation off Mount Elliot Street.

Since May, fires have leveled the Obstruction of Justice House, the War house, the House of Soul, and the Penny House.

Slideshow: The Heidelberg Project in Detroit

Project creator Tyree Guyton transformed his decaying, crime-ridden neighborhood into the interactive sculpture park on Detroit's east side. His work began in 1986.

The project has since started security patrols and is fundraising.

The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives is investigating and offering a $5,000 reward.