Glamorgan Street Chapel was built c.1835 in the Sub Classical gable entry type. The Chapel is stone faced with a slate roof and round-headed windows with interlacing tracery. The builder may have been David Blow, the first English Congregational Minister who donated all/part of his garden for the chapel site. The Chapel was converted into the Brecknock Museum in 1927 and since the opening of the new Shire Hall Museum in 1974 has been used as a Museum store.

RCAHMW, 15 May 2009.