Park Place is a signature skyscraper located at 666 Burrard Street in Downtown Vancouver's Financial District.

Among the infinite sorrows of the Sept. 11 attack on the signature skyscrapers known as the twin towers, Mr. Hoffman's is particularly excruciating.

Chase Tower, also known as Cotter Ranch Tower, is a signature skyscraper in Oklahoma City's central business district.

The simulations let LZA/Thornton Tomasetti calculate how the signature skyscraper, designed by Renzo Piano and Fox & Fowle Architects, would react to each theoretically possible terrorist attack.

Although work is under way on the foundation of the Freedom Tower, a top official cast new doubt yesterday on whether the signature skyscraper's steel frame would ever rise above street level.

The MetLife Building, a signature skyscraper on the Manhattan skyline and the glittering gateway to Park Avenue above Grand Central Terminal, has been sold for a record $1.72 billion, it was announced yesterday.

But New Yorkers never had their close-up this time around, since the new remake's signature skyscraper, the Empire State Building, is largely a digital creation.

Instead, the "Mouth of the South," as the outspoken Mr. Turner is known, was in the company's signature skyscraper in Rockefeller Center to open a New York outpost of his Ted's Montana Grill restaurant chain.

The group, 233 Broadway Owners, led by the developers Steven C. Witkoff and Ruben Schron, plans to create an "office club" on the top 25 floors of the Woolworth Building, one of New York's signature skyscrapers.

Since Sept. 11, the owners of signature skyscrapers have been trying to find ways to calm jittery tenants and make the buildings more durable if catastrophe strikes.