Architecture is a form of art. When a city constructs a new building, it should add beauty to its streetscape.

But that doesn't always happen. Every town across the United States likely has a tower, a government complex, or an office building that residents wish never went up.

Business Insider asked readers to name the one architectural eyesore they loathe in their state. Responses ranged from a building that looks like a giant wooden basket to a hotel painted solid gold.

The most unpopular buildings — two that were named by nearly a dozen readers — were Boston's City Hall, a concrete structure that one person described as "depressing," and Manhattan's 432 Park Avenue, a skyscraper that another reader said resembles "a very tall trashcan."

Here are the ugliest buildings in every US state, plus Washington, DC: