Dutch architect UN Studio has released a slideshow documenting the bunker teahouses he built on two 1936 military bunkers in Vreeswijk, Netherlands.
As part of a new commercial and sports complex, the Polo Grounds are surrounded by polo fields and stables on land that was once part of New Holland's water defenses, which were built in the 19th century as an 85-kilometer system of pillboxes, dykes, and water management systems to quickly flood the land in the event of an invasion.
