It’s easy to think that the place you’ve lived in has always been the same–that New York City’s shorelines have been roughly where they were since the discovery of Mannahatta. But we learned the reality the hard way almost a year ago with Hurricane Sandy and saw just how much we’ve altered in the natural landscape. In fact, there was a time that city planners were fairly obsessed with filling in our waterways–here is a plan to fill in the Hudson River and another to drain the East River.

As a quick reminder, here are eight spots in New York City that were created out of excavations elsewhere.

1. Governor’s Island

The Hills-Governors Island-Construction-Views-Lookout Hill-Slide Hill-Governors Island Trust-NYC_7View from The Hills, the latest new park on Governors Island

The southern portion of Governor’s Island (the cone of the ice cream-coned shape island) is actually landfill from the excavation of the 4/5/6 trains on the East Side of Manhattan. Over the last few years, this portion of the island has received some significant upgrades. In the summer of 2016, The Hills opened which included the longest slide in New York City and in 2014, Hammock Grove and Play Lawn opened.