The only truly wonderful skyscraper is a slender white terra-cotta building called the Smith Tower, and that goes all the way back to 1914.

It is sheathed in Olympia white granite and is the only granite-domed skyscraper in the world.

Has record for being the world's only skyscraper in the world that has not had any major accidents or deaths during construction.

The office tower is currently the only skyscraper in Malta, at around 100 meters high (roof height) and possessing 23 floors.

It is the only skyscraper in Frankfurt with a public viewing observatory.

But as the only skyscrapers in a flat city, the plattenbaus offer some striking views.

The building is also the only skyscraper in downtown Chicago east of Lake Shore Drive.

During this period the Park Tower (opened in 1973) was the city's only substantial skyscraper (460 feet/36 stories) constructed until the building boom of the 1980s.

BUT 7 World Trade Center is the only skyscraper he's built twice.

I remember when it was one of the only skyscrapers in Minneapolis.