Monokote, once hailed as a wonder substance sprayed on steel to prevent the spread of fire inside skyscrapers, was originally asbestos-based until the early 1970s, when federal regulators started ...

Today, we're stepping inside a true Seattle icon ... On the sixth floor of a skyscraper downtown is a swimming pool. And this is where Helene Madison swam her way into the record books.

According to The Skyscraper Center, the next-tallest completed residential building is Manhattan's 432 Park Avenue at 1,397 feet, which Central Park Tower surpassed in height earlier this year.