Insurance companies call some of the most stunning pieces of architecture their home. From striking futuristic and eco-friendly designs to classic and iconic structures, these headquarters are beautiful works of art.

In this slideshow we present our selection for the top 10 best insurance headquarters, listed in no particular order. At the end of the list, make sure to vote for your favorite building in our poll, and let us know if we missed any by commenting below.

Click “next” to see the list and vote for your favorite.

Willis Tower, Chicago.

Willis Group Holdings' U.S. headquarters is located in the iconic Willis Tower in Chicago. Formerly the Sears Tower, Willis leased a portion of the building and obtained naming rights in 2009.

The 110-story tower was the world's tallest building from 1974 until 1998, when it was surpassed by the Petronas Towers in Kuala Lumpur, Malaysia.

The Willis Tower is the seventh-tallest freestanding structure in the world, after the Burj Khalifa, the Tokyo Sky Tree, the Abraj Al Bait Towers, the Canton Tower, the CN Tower and the Ostankino Tower.

State Farm, Bloomington, Ill.

The design of State Farm's corporate headquarters in Bloomington, Ill. is pure modernism. In 1972, the 12-story building and two connected four-story buildings were built. Another two  four-story buildings were added in 1987.

Aon Center, Chicago.

When it was completed in 1974, Aon Center was the tallest building in Chicago, earning it the nickname “Big Stan.” The building's construction method employs a tubular steel-framed structural system with V-shaped perimeter columns—the same method that was used for the World Trade Center towers in New York City, giving it a similar look to the iconic buildings.

Originally called the Standard Oil Building, the building was renamed the Aon Center in 1999.

Lloyd's of London.

In stark contrast to its status as the oldest insurer, Lloyd's of London has one of the most striking, futuristic headquarters on the list. The building, located at 1 Lime Street in London, was completed in 1986, but still looks way ahead of its time.

Designed by architect Richard Rogers, the building stands on the site of the old Roman Forum. The 1925 facade still survives, appearing strangely stranded with the modern building visible through the gates on the northern side on Leadenhall Street. In 2011 it was listed as a Grade I “building of exceptional interest” by heritage minister John Penrose.

Travelers, St. Paul.

With its distinctive pyramid top, the Travelers headquarters building in St. Paul, Minn. is the tallest building in downtown St. Paul. The 525,000-square foot, 17-story office building features a sign with the Travelers name and its signature red umbrella.

AXA, Paris.

AXA's global headquarters in Paris is a beautiful structure with contrasting designs. The building's neoclassical design is juxtaposed with glass panels that make the building elegantly classic while strikingly modern at the same time, making it one of the best insurance headquarters in Europe.

Zurich, Milan.

Zurich's Milan headquarters is a high-tech, post-modern building designed by architect Alessandro Scandurra. Completed in 2009, the unique building has received a lot of attention for not only having an innovative exterior, but an interestingly decorated interior as well.

Willis Building, London.

Willis makes it on the list again with its outstanding headquarters in London's financial center. Designed by architect Norman Foster, it stands opposite the Lloyd's building. The building features a “stepped” design, which was intended to resemble the shell of a crustacean.

The Willis Building is London's fourth-tallest building after Tower 42, 30 St. Mary Axe and CityPoint.

Swiss Re 30 St Mary Axe Tower, London.

Swiss Re's London office, located in the award-winning 30 St Mary Axe Tower, has remade the London skyline and has become one of the world's most iconic office buildings. The landmark skyscraper, known as “the gherkin,” was designed by architect Norman Foster and opened on May 25, 2004.

The building is London's first environmentally sustainable tall building, with distinct windows that open to allow natural ventilation to supplement the mechanical systems for a good part of the year.

Liberty Mutual, Boston.

The list closes with a look to the future. The classic Liberty Mutual Insurance building in Boston, built in 1936, is getting a modern addition within the next few years, as seen in the rendering below. The new addition to Liberty Mutual's Boston campus and will be attached to the original building by a glass sky bridge.