Historypin was created by the social movement We Are What We Do, in partnership with Google.
We Are What We Do is a global social movement that creates ideas, products and tools that make it easy for people to make a difference to big social and environmental issues.
Historypin is one in a series of projects created as part of We Are What We Do's campaign to get generations talking more, sharing more and coming together more often.
There has been a major trend in different generations spending less time together. Which is a shame. Old people know stuff young people don't. And young people know stuff old people don't.
While they're using Historypin, a lot of young people will be asking older people for photos, and a lot of older people will be asking young people when to click and when to double click.
Historypin is a global project. It was launched in London in June 2010 and in the next few years there will be Historypin events and projects held all over the world.