When the Thai economy was booming in the early 1990s, construction started on a 60km high-speed elevated train and motorway link from central Bangkok to the international airport at Don Mueang. However when the currency collapsed in 1997-98, work was abandoned.
These stained concrete fragments (pictured) are all that remains of the Bangkok Elevated Road and Train System (BERTS) or Hopewell project. They line the old diesel-fuelled railway through northern Bangkok like a modernist Stonehenge.