The Casona de Regla, also known by the names of Cortixu or Casa de les tres perrines, is a semi-rural urban building built in the middle of the 18th century in the area outside the walls of Oviedo, which formed part of a group of ground floor buildings enclosed by a wall.
It is believed that this building was designed by the architect Manuel Reguera, who managed to achieve a unique fusion of cultured and popular architectural elements in this mansion.
It was built at the request of Antonio López de Dóriga for his own home next to his industry, with which the rear courtyard of the mansion communicated directly.
What was known as "Cortixu de Regla" comprised the building that served as an office, the industrial building and the owner's house, constituting a rare example of 18th century industrial architecture, reflecting one of the few attempts at industrialisation that existed in the Principality. Between the end of the 18th century and the end of the 19th century, it was the site of two industries, one for ceramics (the Talavera kiln and factory) and the other for tanning.
The manor house is a rectangular building with three floors and an attic with attic. The walls are made of rendered masonry, with sandstone ashlars in the corners, which are chamfered in the imposts separating the floors and in the markings of the doors, balconies and windows. The Arabic-tiled roof has a hipped roof, except for the attic and dormer windows. It is thought that it may have been the work of the architect Manuel Reguera.
The main entrance to the manor house is via a double external staircase with a skirting board. The interior layout has been completely altered, as the building was divided into twelve dwellings for a long time.
On the façade there is an inscription referring to the fact that the renowned musicologist Eduardo Martínez Torner was born here in 1888.