There are few things more satisfying to a photographer than taking a camera where few professionals have been before. But there aren’t many places like that left on Earth.

Joe McNally seeks out these rare spaces. Recently, he made it to the very top of the tallest building in the world — the Burj Khalifa in Dubai, United Arab Emirates.

The good news for adventurous photographers is that, while Mr. McNallymay have beaten you to the top of the tallest artificial structure in the world, there will probably be a different tallest building next year, and he is more than willing to share his climbing and shooting secrets. By James Estrin  More info and video