Buildings become abandoned for many reasons, both before and after they're built. Tall skyscrapers can be especially pricey and remain unfinished.

Editor’s Note: This CNN series is, or was, sponsored by the country it highlights ... sized skyline is already home to the ...

the World Trade Center, the Virreyes Tower or the Soumaya Museum. Although these buildings have a large size and are nowadays characteristic symbols of the center of the country, the places ...