It's always interesting to see how people from the past envisioned the future, and Oobject has gathered up a series of images that provide a glimpse at retro-futuristic versions of New York City that never were. You can see everything from Manhattan covered with a geodesic dome, to the city's skyline circa 1999, as predicted in 1900. The collection includes some pretty out there plans as well — including building a second, bomb shelter-like city underground; draining rivers to relieve traffic congestion; and of course creating a train that travels through the Statue of Liberty's mouth. You can check out the complete collection at the source link below.