Bethlehem Independent Chapel was founded and built in 1874 to the design of Owen Morris Roberts of Porthmadog. It is in the Classical style, with a cement rendered exterior and rusticated quoins. The chapel is entered via a double panelled wooden door into a porch adjoining the northern gable end. In the triangle of the gable there is a small arch-headed window with vented side lights. The left hand elevation has four tall arch-headed paned windows, and bears a plaque which reads 'BETHLEHEM / CARTREF / SEINDORF / TREFOR / (SEFYDLWYD 1863)'. The right hand elevation has an adjoining lean-to building, while the rear elevation has no fenestration. The chapel is topped by a pitched slate roof.

Source: RCAHMW Inventory Documents

K Steele, RCAHMW, 20 February 2009