Garbage dumps are generally not associated with thriving coral reefs, vast mangrove plantations and rare bird species. Yet on Pulau Semakau off Singapore, this is exactly what you will find: just beside a secluded ecological zone that harbors dozens of rare plant, bird and fish species lies the world’s first ecological offshore landfill. Located 8 kilometers south of Singapore and covering an area of 3.5 square kilometers, the Semakau Landfill was designed by engineers and environmentalists at Singapore’s National Environment Agency (NEA). It consists of two small islands that have been connected by a rock embankment. The area inside the landfill is divided into 11 bays, known as ‘cells’, which are lined with thick plastic and clay to prevent any harmful material from seeping into the sea.