PropertyCasualty360 Names Top 10 Best Insurance Buildings

The 44th-floor sky lobby inside the building features America's highest indoor swimming pool.

Transamerica Pyramid, San Francisco

Although the Transamerica Pyramid is no longer the headquarters of Transamerica, the building is strongly associated with the company—even appearing in its logo. Completed in 1972, it is the tallest skyscraper in the San Francisco skyline and is also a symbol of the city.

New York Life Building, New York City

The New York Life Building is a massive, imposing structure that occupies the full block between 26^th and 27^th Streets, Madison Avenue and Park Avenue South—something you don't see often in New York City. The 40-story building is known for its iconic gold-colored pyramid, which consists of 25,000 gold-leaf tiles.

The building was designated an official New York City landmark by the city's Landmarks Preservation Commission in 2000, and is listed in the National Register of Historic Places as a National Historic Landmark, designated in 1972.

Aetna, Hartford

The Aetna headquarters in Hartford, Conn. is the world's largest colonial revival building. The building—completed in 1930—is also the largest office building in Conn., and is crowned by a tall Georgian tower inspired by the Old State House in downtown Hartford.

Prudential Tower, Boston

Colloquially known as The Pru, the Prudential Tower in Boston is the second-tallest building in Boston, behind the John Hancock Tower—unless you include its radio mast, which makes it the tallest building in the city. When it was completed in 1964, The Pru was the tallest building in the world outside of New York City.

The building features an observation deck on its 50^th floor called the "Prudential Skywalk" and is the highest observation deck open to the public in New England.

On special occasions, LED lights near the top of the building are illuminated in nearly every color, adding a distinct feature to the Boston skyline.

Humana Tower, Louisville, Ky

The Humana Tower in downtown Louisville, Ky. is locally known as "The Milk Carton" thanks to its basic design. Each of its sides is designed slightly different, up to a sloping pyramid style for the upper few floors. Another feature of note on the building is its exterior construction of flat pink granite.

The American Institute of Architects awarded the Humana Building the National Honor Award in 1987. Time Magazine listed it as one of the ten best buildings of the 1980s.