The Rosemount Museum, pronounced "Rosemont"[7] is a historic house museum in Pueblo, Colorado, it is situated on a square block at the corner of one of the highest points in north Pueblo[3] and across the street from Parkview Medical Center.

[9] John Thatcher moved from Pennsylvania to Colorado, where he prospered in the dry goods business before branching into banking, mining, and cattle ranching.

Built with pink Rhyolite volcanic rock for the exterior and a multitude of different woods for the interior; cherry, mahogany, maple and oak, the mansion housed the Thatcher family for decades.

John, the patriarch of the family passed in 1913 and his last living child, Raymond C. Thatcher died in 1968.

In 1969 a public trust was established by the Thatcher family for the creation of a nonprofit[10] house museum.