City tours led by homeless guides? Why not? Apparently it’s a growing trend. In London, the homeless are empowered by Unseen Tours to lead tours where they live; in San Francisco, a homeless guy called Milton offers an insider tour through soup kitchens and shelters to a part of the city where poverty is rampant; in Amsterdam, your homeless guide will show you abandoned houses that double up as shelters and the restaurant rubbish bins where meals can be salvaged from. Business Insider has more details.