Pontypridd on Wikipedia.
 

Churches in Coedpenmaen, Graig, Pwllgwaun.
 

Bethel Baptist Church at Hawthorn. © Gerard Charmley.

The former Eglwys Bach Methodist Church, now a surgery. Gerard advises that Eglwys Bach refers to the Revd. John Evans, a very popular preacher in the 1890's. He was sent to the Glamorgan Collieries following the 1893 Cardiff Conference, and died in 1897 in Liverpool. © Gerard Charmley.

Kingdom Hall of Jehovah's Witnesses on Sion Street. This was originally Capel Seion (Welsh Independent, 1870). ST 075 904. © Martin Richter (2012).

The former Pontypridd Synagogue on Cliff Terrace. Judging by appearances, it may have had a previous chapel incarnation. ST 078 896. © Gerard Charmley. Howard Richter has advised of this link, which includes (under 1895) entries for the laying of a foundation stone and subsequent building of the synagogue, so my speculation that it may have had a previous existence is unfounded. There is a contemporary newspaper account of the opening ceremony here. It was "defunct" in 1973, and was sold off and converted into flats. There is an illustration of the building in 1986 here. In an earlier entry (for 1867) mention is made of a building converted to synagogue use, though where this was isn't mentioned.

St. Catherine (Anglican). © Gerard Charmley. Link.

St. David's Uniting Church (previously English Congregational). © Gerard Charmley.

Sardis (Welsh Independent). © Gerard Charmley.

The former Tabernacle Baptist Church (1861), now the town Museum and Art Gallery. Interior view. Both © Gerard Charmley.

Temple Baptist Church (previously St. David's Presbyterian). © Gerard Charmley. Link.

Wesley Chapel, in the town centre. © Gerard Charmley.

Coedpenmaen
Baptist Church. © Gervase N. E. Charmley. Link.
The former Bethania Calvinistic Methodist Church dates from 1908. © Gervase N. E. Charmley.
Gateway Community Church (Elim Pentecostal). © Gervase N. E. Charmley.
The former Parish Church (now derelict). © Gervase N. E. Charmley.
 

Graig
St. John the Evangelist. © Gervase N. E. Charmley.
Graig Presbyterian Church. © Gervase N. E. Charmley.
Temple Baptist Church dates from 1891. © Gervase N. E. Charmley. Link.
 

Pwllgwaun
Bethany English Baptist Church (1906). © Gervase N. E. Charmley. Link.
Hermon Presbyterian Church (1914). Another view. Both © Gervase N. E. Charmley.
St. Mark (CiW). © Gervase N. E. Charmley.
Tabor Hall, formerly Tabor Methodist Church, home of the Pontypridd Male voice Choir. © Gervase N. E. Charmley.