From New York to Shanghai, coastal cities around the world are at risk from rising sea levels and unpredictable storm surges. But rather than simply building higher seawalls to hold back floodwaters, many builders and urban planners are turning to floating and amphibious architecture — and finding ways to adapt buildings to this new reality.
Some new buildings, including a number of homes in Amsterdam, are designed to float permanently on shorelines and waterways. Others feature special foundations that let them rest on solid ground or float on water when necessary. Projects range from simple retrofits for individual homes in flood zones to the construction of entire floating neighborhoods — and possibly even floating cities.
“It’s fundamentally for flood mitigation, but in our time of climate change where sea level is rising and weather events are becoming more severe, this is also an excellent adaptation strategy,” says Dr. Elizabeth English, an associate professor at the University of Waterloo School of Architecture in Ontario. “It takes whatever level of water is thrown at it in stride.”
From ground level, amphibious houses look like ordinary buildings. The key difference lies with their foundations, which function as a sort of raft when the water starts to rise.