Wall Street's iconic bronze charging bull is actually an illegal piece of street art!

In 1987, after a massive stock market crash the people of the United States were left feeling hopeless and feared the future. Arturo Di Modica wanted to change citizens gloomy visions for the future, and used his artistic talents, as well as over $300,000 to have a 7,100 pound charging bull made of bronze placed on Wall Street. The bull is intended to be a symbol of 'strength, power, and hope for the American people.'

The government had the bull removed from Wall Street within 24 hours of it being placed there by Di Modica. After public outcry, the government 'temporarily' placed it back on Wall Street in it's current location and hasn't been relocated since. Di Modica has been trying to sell the bull since 2004 on the condition that the person who buys it doesn't remove it from Wall Street.

(Source)