Chongqing Liziba Station — Monorail Through a Building

In Chongqing, a city defined by sharp slopes, river valleys and densely built neighborhoods, urban rail infrastructure must share scarce space with roads, commercial areas and housing. Liziba Station offers one of the most visually memorable responses: trains on Chongqing Rail Transit Line 2 run into the middle of a residential-commercial building and emerge on the other side. To a visitor standing below, the moving train appears to pass straight through an apartment block. In reality, the building includes a purpose-designed transit station, making the passage a functioning interchange between transport infrastructure and urban development rather than a stunt or an afterthought.

Completed in March 2004, Liziba was planned and constructed together with the surrounding building. According to the Chongqing municipal government, the station occupies the sixth and seventh floors of a building at 39 Liziba Main Street and includes approximately 6,000 square meters of total floor area. The line uses a straddle-type monorail: rubber-tired vehicles ride astride a concrete guideway beam, rather than conventional steel wheels on a pair of rails. The station–bridge structure is separated from the residential building’s structural support, reducing transfer of loads and vibration to occupied portions. Specific indoor noise and vibration measurements have not been independently verified for this profile.

The story is larger than the famous photograph. Liziba is an ordinary working station on the public transit system. Passengers arrive on platforms inside the building, while trains continue along a steep urban corridor. Outside, the spectacle has transformed a piece of transport infrastructure into a recognizable urban landmark. A dedicated public viewing area was developed to manage and accommodate people gathering to see and photograph the passage of the trains. The municipal government describes a viewing platform of roughly 1,367 square meters, including approximately 840 square meters devoted to viewing and photography.

Liziba matters because it illustrates infrastructure and building design as a coordinated urban system. It is not evidence that a monorail through an apartment block is appropriate everywhere: the arrangement demands careful decisions on structural isolation, emergency access, safety, passenger movement, maintenance and the rights and comfort of occupants. Its transferable lesson is to make transport and land use work together, especially where terrain and urban density constrain conventional alignments.