Getting water from upstate reservoirs to the taps of over 8.5 million people in New York City is no easy feat. From purification, through thousands of miles of underground tunnels, this is how New York City gets its water.

Michael Wyetzner of Michielli + Wyetzner Architects returns to AD, this time breaking down five of the most common apartment types found in New York City. From long and narrow railroad-style abodes to stately multi-level brownstones and everything in between, Michael gives expert insight on the many different places you can call home in the big apple.

Andi Schmied pretended to be a billionaire to infiltrate NYC’s most exclusive and expensive homes, which only cater to the unbelievably wealthy and privileged. Touring homes up to $85 million, she wanted to see and photograph how the 1% of the 1% lives in one of the most iconic and expensive cities in the world. To do so, she had to transform herself from an artist into a convincing billionaire almost overnight. But while snapping 25 penthouses she discovered a world of high rise apartments sitting empty in a city facing a housing crisis.