After moving to New York City and pursuing graduate studies in urban planning, Moses Gates began exploring hidden facets of the city--from visiting abandoned structures and disused subway stops to scaling the Brooklyn, Manhattan, and Williamsburg bridges. The more he experienced and saw, the more his thirst for adventure grew, and soon he was traveling to a dozen countries on four continents, stumbling upon ancient underground Roman ruins, partying in tunnels, sneaking into Stonehenge, and even finding himself under arrest on top of Notre Dame cathedral. Hidden Cities will inspire readers to contemplate the potential for urban exploration available for anyone, anywhere--if they have only the curiosity (and the nerve) to dig below the surface and discover the hidden corners of this world.