Railway watch house, Derrygoas, Newtownbutler, Co Fermanagh, BT92 8GD

This is a one-and-a-half-story, three-bay former railway crossing keeper's house, aligned east-west on the north side of the former Clones-Cavan railway line. The building is notable as the only gatehouse on that line to be located within Northern Ireland. Constructed around 1887, it was occupied until the mid-1980s.

The house has a pitched roof covered in natural slate, with exposed rafter tails and scalloped eaves boards. The bargeboard on the east gable is intricately detailed, while the west gable has a plain bargeboard. Half-round metal gutters run along the roofline. The walls are of random rubble and rendered with a painted wet-dash lime mortar. A rendered chimney stands on the east gable, and a taller, rendered brick chimney is located between the left and middle bays (when viewed from the south).

The south-facing principal elevation has five openings. A tongue-and-groove (t+g) door is at the far left, with a window to its right, serving the left bay. The middle bay contains a single window, and the right bay has two windows. These regularly spaced windows are 2/2 sliding sashes with horns, featuring flat brick heads, stepped brick jambs, and sandstone sills. The west gable is blank, while the rear (north) elevation is mostly blank except for a narrow t+g door at the extreme right, which was later filled with random rubble. The east gable is also blank.

To the left of the west gable, a pair of square, one-piece stone pillars stand, one of which supports a wrought-iron ‘sunburst’ gate. Although the railway line is no longer visible nearby, it can be traced as an embankment a short distance to the east. The Clones & Cavan Extension Railway opened this section of line in 1862, and it was later absorbed into the Great Northern Railway network in 1876, remaining in use until 1960. The building exhibits industrial archaeological interest due to its connection to the railway and its well-preserved architectural details, including style, proportions, ornamentation, plan form, and setting.