Bangor, Gwynedd

Bangor on Wikipedia.

Many thanks to Nicholas Page for identifying several of these churches, and advising of their previous status. Nicholas' contributions are in italics.
 

Assemblies of God (Pentecostal) on Princes Road was the English Presbyterian Church until the mid 1980's. © Martin Briscoe. Another view, also showing the Anglican Chaplaincy to the right. © Tim Hollinghurst. The interior of the Chaplaincy Chapel. © Tim Hollinghurst.

Baptist Church at Penrallt was previously the Twrgwyn Calvinistic Methodist Church. © Martin Briscoe. Grade II listed

Calvinistic Methodist Chapel (Martin is unsure of its current status, but it is marked as such on a map of 1913). Nicholas tentatively identifies this as the Hirael Calvinist Chapel. If so, it was intended to be converted to community use. © Martin Briscoe. Howard Richter has confirmed that this is indeed Hirael, on William Street (SH 5863 7246). According to the Coflein entry, it originally dates from 1843, but was subsequently modified or re-built in 1870 and 1876. Coflein also says that it was converted into flats in 2008 - this should be interpreted as "converted into flats by 2008", as a planning application for conversion had been lodged in 2002, and the first flat in the chapel sold in 2003.

Capel Pendref, Eglwys Annibynnol, on High Street. © Martin Briscoe. Grade II listed.

Capel Tabernacl - the former Tabernacl, closed in the late 1960's. The following additional information has been brought to my attention by Martin Briscoe. On the Geograph entry for this building, it states that the chapel was built in 1905, and declared redundant in the 1980's (so was it the 1960's or the 1980's?).
It also says that the vestry (not visible on this website's photo) was, in the 1960's, in use as Bangor Synagogue. © Martin Briscoe. Grade II listed.

Cathedral Church of St. Deiniol. Another view. Both © Martin Briscoe. Two additional views - 1, 2, the interior and organ, the wooden choir vault (designed by Sir George Gilbert Scott as part of his restoration), and the Lady Chapel altar, all © Adam McCurdy (2015). What is referred to as The Mostyn Christ is a late 15th or early 16th century oak sculpture, and some Flemish sculptures now in the north wall of the choir were rediscovered in 1961, having been discarded during the Reformation. Both © Adam McCurdy (2015). Link. Grade I listed.

Ebenezer Congregational Chapel, at the junction of York Place and Caellepa. The grade II listing advises that it was built in 1858 as a replacement for an earlier chapel of 1810 (it doesn't specify if this was on the same site), and it was closed in 1967 following merger with Pendref. An image is available on Streetview, here. SH 5827 7206.

Ebenezer Evangelical Church. © Martin Briscoe.

Ein Harglwyddes a Sant Iago (Our Lady and St. James, R.C.). SH 5756 7202. © Martin Briscoe. Link. The Coflein entry advises that this was previously St. James (Anglican, 1866), only becoming a Catholic church in 1996. Grade II listed.

Penuel Chapel. © Martin Briscoe.

St. David. The Sanctuary. Both © Tim Hollinghurst. Notice of planned closure from the BBC (2013).

Santes Fair (St. Mary). © Martin Briscoe. Notice of planned closure from the BBC (2013).

Seion Chapel. © Martin Briscoe.

Black Bull Inn. The site is marked on the 1913 map as a chapel, and is the former Church of Our Lady (R.C.). It was sold when Our Lady and St. James became the Catholic church in Bangor, in the late 1980's. © Martin Briscoe.