If you've ever wondered what cities of the future might look like, this new concept art from New York design firm Clouds Architecture Office has some beautifully outlandish ideas on the subject.

The firm has proposed a tower that, instead of being supported by the ground and reaching up into the sky, would instead hang suspended from an asteroid.

Named Analemma, the proposed skyscraper would be the tallest building ever created, and would travel thousands of miles each day between the northern and southern hemispheres in a figure-of-eight loop - including a daily pass over New York City.