Doug Brown, 47, an award-winning art photographer whose works on nature and architecture were shown at such places as the National Building Museum, the Arlington Arts Center and the Rockville Arts Place, died of a heart ailment July 13 at his home in Arlington.

In addition to his artistic work, Mr. Brown, like many artists, held a conventional job to support his creative endeavors. A former photography instructor in Florida, he came to the Washington area in 1983 and worked as a commercial photographer specializing in real estate.

He did photography work for Boston Properties, CarrAmerica, JP Morgan Real Estate and others. Most recently, he had an ongoing assignment with Charles E. Smith Co. to document the restoration of the historic Alban Towers near Massachusetts and Wisconsin avenues in Northwest Washington.

Photographing landscapes and documenting the demolition of old buildings proved an inspiration to Mr. Brown in creating art that investigated time and compared urban decay with environmental degradation.

In 1994, he created "Nature Boy," a multimedia photographic environment at Arlington Arts Center. The show, which was divided into various installations, displayed large images of creek beds and gardens, utilized motion sensors to trigger soundtracks, and offered years worth of photographs layered, edited and recombined to portray plant and animal growth at different stages.

Also part of the exhibition was a mounted buck's head with antlers. "The deer really is the one `real' thing in this show," Mr. Brown explained to The Washington Post in 1994. "Everything else is a representation, a little bit removed. Putting it in here says something about how we twist nature, how we want to grab it and shape it and possess it."

Mr. Brown was born in Tulsa. As a youth, he picked up on his father's hobby of photography. He graduated from Southern Illinois University and received a master's degree in photography from the University of South Florida.

He worked for a Chicago audio-visual firm in the mid-1970s and later taught photography at Hillsborough County Community College in Florida and University of South Florida.

His marriage to Natalie McFaul ended in divorce.

Survivors include his mother, Margaret Brown of Baldwin City, Kan., and his father, Donald Brown of Tucson, Ariz.; two brothers; and a sister.