Seoul Railway System is a railway map of Seoul metropolitan area whose overall image is inspired by the taegeuk mark of the Korean national flag. Han River, flowing across the city from east to west, has been the driving force behind the development of the capital city & is the symbol of the long history of the Korean Peninsula. City Railway System is a new approach to projecting the identity of a city onto its subway map. Whereas conventional subway maps aim at conveying information as clearly & concisely as possible, the City Railway System by Zero Per Zero instinctively incorporates symbolic elements of each city into its map while preserving clarity. As a special consideration for tourists, major landmarks & tourist attractions are indicated on the subway maps, so that tourists can easily figure out the quickest way to get to the destination at a glance. The railway map itself is also good as a souvenir.