Douglas is a city in Cochise County, Arizona, United States that lies in the north-west to south-east running Sulphur Springs Valley.

Douglas was founded as an American smelter town, to treat the copper ores of nearby Bisbee, Arizona.

The Copper Queen operated in Douglas from 1904 until 1931, when the Phelps Dodge Corporation purchased the Calumet and Arizona Company and took over their smelter.

The "Cowboys Home Saloon" was the location of the fatal shooting of bar owner Lorenzo "Lon" Bass.

[6] In 1916, the Mexican revolutionary leader Pancho Villa threatened to attack Douglas, believing Americans responsible for his defeat at the Second Battle of Agua Prieta.

[7] On June 23, 1926, missing evangelist Aimee Semple McPherson was found collapsed near a road at the adjacent Mexican town of Agua Prieta.

She was driven into Douglas and told a story of kidnap, torture and escape as she convalesced at Calumet Hospital.

For a period of several weeks, Douglas enjoyed a brisk tourist boom as police, reporters and others visited the town and the nearby desert to investigate her story.

"[8][9] In 1989, the Sinaloa Cartel dug a 300-foot (91-metre) tunnel between a house in Agua Prieta to a warehouse located in Douglas that it used to smuggle drugs across the international border.

[10][11] Following its discovery, the Cartel refocused their smuggling operations towards Tijuana and Otay Mesa, San Diego where it acquired a warehouse in 1992.

The town has been physically divided from Agua Prieta with a tall border wall built under President George W. Bush.

Douglas is located near the southeastern corner of Arizona on the U.S.-Mexico border, across from the city of Agua Prieta, Sonora.

Nighttime lows for the summer months remain in the upper 50s and mid 60s °F (14–18 °C) for the duration of the season.

A stained glass window mural by 5th generation Artisan Ralph Baker, who studied under Louis Comfort Tiffany, extends 42 feet (13 m) across the eastern wall of the massive mezzanine.

The San Bernardino Ranch, 14 miles east of the town of Douglas, was originally established in Mexico and covered thousands of acres.

The Douglas Grand Theatre was built in 1919 and was the largest theater between Los Angeles and San Antonio.

Ginger Rogers, Anna Pavlova and John Philip Sousa are some of the famous faces to have graced the theater's stage.

Today (2009) the theater is undergoing reconstruction, using private donations of money, supplies and labor.