Schieffelin Hall, Opera house and theater in Tombstone, United States.

Schieffelin Hall is a two-story adobe building at the corner of Fremont and Fourth Streets in Tombstone, Arizona. Its walls are 16 inches thick and the structure rises 40 feet. The main entrance on Fourth Street leads to an auditorium measuring 39 by 59 feet, with a stage 30 by 59 feet and a gallery above. The Fremont Street side has a secondary entrance and a second-floor Masonic Hall.

The building was constructed in 1881 by Albert Schieffelin, brother of Tombstone's founder Ed Schieffelin, funded by wealth from successful mining ventures. Since its opening, it has served as a venue for theatrical performances and became central to the town's cultural development.

The upstairs Masonic Hall hosted the founding of King Solomon Lodge #5 on March 14, 1881, with Justice of the Peace Wells Spicer, who later exonerated the Earps and Doc Holliday after the Gunfight at the O.K. Corral, as its first Master. The lodge still meets in the building today.

The building is centrally located in town and easy to find, with ample space inside for various types of events. Visitors should note that it also serves as an official venue for city meetings, so availability may vary depending on the schedule.

The adobe walls are 16 inches (410 mm) thick, and the building rises 40 feet (12 m) tall. The stage drop curtain, painted with a Colorado scene, was considered a work of art when the hall opened. The Masonic Hall upstairs measures 27 by 41 feet (8.2 by 12.5 m) and has three small ante-rooms.