Craig-y-Nos Castle.

This is not really a castle, but a mansion with a castellated Gothic appearance. Now a privately owned hotel and wedding venue, it was formerly the home of the famous opera singer Adelina Patti, who bought the house and greatly extended it, being responsible for its present appearance.
The Gothic core of the mansion was built in 1841-3 for Mr Rice Davies Powell. Adelina Patti acquired the property in 1878 and had various extensions built. The most notable feature is a small theatre which Patti had built. The theatre was completed in 1891 and is still almost entirely original, with a tilt-able floor and the original flats behind the stage curtain. The attractive conservatory has been reconstructed using the original cast-iron columns, and various rooms on the ground floor have been refurbished, some of them very grand. Some bedrooms are available and a few can be seen on the tour, but the upper floors (included in the tour) were derelict at time of visit and remain a work-in-progress.
After Patti’s death, the property was purchased by the Welsh National Memorial Association and used as a hospital for many decades. When this ceased, the property passed into private hands and is currently a hotel and wedding venue.
Some relics of the hospital period remain upstairs. In the cellars a clutter of objects, cables and pipes of various periods are visible in rooms formerly used as the mansion’s service area.
One could say this is an unusual visit but worth a look if you are in the area.