Creek are visible south of the trail near the east end of Leesburg. The bridge was the second longest () that the railroad built within the present boundaries of the regional park. The piers and abutments are the only ones along the trail's route that do not presently support a bridge. Remnants of the facilities of a 19th-century lime company are visible in Leesburg on the northeast side of the trail, southeast of Harrison Street SE. Limestone (calcium carbonate) from a company quarry was mixed with coal and burned in a nearby kiln that was adjacent to the railroad's tracks. Quicklime (calcium oxide) was brought out of the kiln through two arched openings that visitors can see from the trail. The company also supplied farmers with agricultural lime and provided builders with lime plaster for walls and stone for roads. Near the saddle point of Clarks Gap, a stone arch crosses over the trail. Constructed around 1867-1868 soon after the end of the Civil War, the masonry arch once carried the original VA 7 over the railroad's tracks at the railroad's highest point. The arch now carries Dry Mill Road (VA 699) over the trail. Displays and museums The Norfolk Southern Railway and its predecessors have donated three cabooses for display along the W&OD Trail. While none of these resemble the cabooses that once travelled along the route of the W&OD Railroad, two of the three cars house exhibits of materials relating to the W&OD Railroad and Trail. A Southern Railway bay window caboose (number X441) within the Bluemont Junction Railroad Display in Arlington exhibits photographs, maps and other information related to the County's railroads and trolleys. Staffed by a County park ranger, the caboose is open to the public on weekend afternoons from the Memorial Day weekend through Labor Day. The display also contains outdoor signage and photographs that describe and illustrate the history of the W&OD Railroad and of its junction that once operated at the site of the exhibit, as well as a metallic crossbuck and a metallic marker post that was once located from a station. Adjacent to the Trail in Vienna, the Freeman Store houses a museum of the town's history. The museum contains maps, books and other materials that relate to the W&OD Railroad. Operated by Historic Vienna, Inc., the museum is open to the public during the afternoons of each week from Wednesdays