Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Mark Lane tube station is a disused station on the Circle and District Lines of the London Underground, west of the modern Tower Hill station. It was originally opened in October 1884 to replace the short lived Tower of London station, which was closed when the Metropolitan Railway and Metropolitan District Railway were connected to form the Circle Line and a new larger station had to be built. In 1946 the station was renamed from Mark Lane to Tower Hill.