HostelBookers now offers images of hostels in countries including UK, the US, the Netherlands, France, Italy, Spain, Japan, Australia and New Zealand.
At the same time the site has improved event and travel news and enhanced its guides.
David Smith, chief operating officer at HostelBookers, said: "The addition of Street View is just the latest in a long line of modifications to ensure that we provide customers with as much information as possible before booking their accommodation."
The site features 14,000 hostels in 3,000 destinations.