...that since the BL 12-inch railway gun allowed only 1° left and right traverse by pivoting the entire gun car body about the forward bogies, it was operated on specially-constructed curved track and moved forward or backward to point it at a new target?
...that many parts of the Oppenheim's Glassworks building and machinery, which were demolished in the mid-19th century for construction of the original Birmingham Snow Hill railway station, are believed to be buried underneath the current station and car park?
...that the Biebermühl Railway in Germany is the only one of all the Palatine railway lines that were completed in the 20th century that has never been threatened with closure?