A huge art project called One & Other that involved 2,400 people in London's Trafalgar Square has ended. Housewife Rachel Wardell was the first person to take part.
Nearly 35,000 people wanted to get involved. The successful ones each got to spend an hour on top of the plinth, doing whatever they wanted.
The first person climbed up on 6 July 2009. For 100 days a new person stood on the plinth every single hour. That meant some people's turn came in the middle of the night.
Some people used their hour to make a point. This man was trying to draw attention to a British woman found guilty of murder in 2002 in America who faces the death penalty.
Others were a little less serious during their hour. Claire F chose to dress as a banana and play hangman with people.
This is the artist who came up with the idea. He's called Antony Gormley and normally makes sculptures.
Oliver dressed up as a giant poo. He did so to make people more aware of the need for everyone to have access to clean water.
The final person to take part was Emma Burns. She used the last hour of the event to highlight the people who died at the Hiillsborough disaster in 1989.
And this was how she got down - using a big crane. Some 1,208 men and 1,192 women aged between 16 and 84 took part from all over the UK in the 100 days of the installation.