Bangkok eventually will be under the sea...

Whether you want to believe it's climate change brought upon by man or a natural cycle of the Earth, Bangkok faces underwater future. What will happen to the 10 million people remains to be seen as Bangkok is one of the 13 of the world's largest 20 cities at risk of being swamped as sea levels rise in coming decades, according to warnings at the recent Intergovernmental Panel on Climate Change.

It's obvious part of the problem was brought about by bad advice:

Once known as the "Venice of the East," Bangkok was founded 225 years ago on a swampy floodplain along the Chao Phraya River. But beginning in the 1950s, on the advice of international development agencies, most of the canals were filled in to make roads and combat malaria. This fractured the natural drainage system that had helped control Bangkok's annual monsoon season flooding.

Also illegal activity:

But the city, built on clay rather than bedrock, has also been sinking at a far faster pace of up to 4 inches annually as its teeming population and factories pump some 2.5 million cubic tons of cheaply priced water, legally and illegally, out of its aquifers. This compacts the layers of clay and causes the land to sink.