A new tour in the Czech capital Prague has promised to expose the 'best of the worst' corruption in the city, in a bid to highlight the excesses of the city's graft.
It's a unique idea to draw attention to a real problem, and it appears to be going down well with both locals and visitors, who have described the tour of lobbyists and rich businessmen's villas as "a fantastic experience."
If you're keen on stepping away from the traditional city tour in favor of something slightly more unusual though, Prague isn't the only option.
Dearly Departed Tour
Los Angeles, CA, USA
This tour takes in some of the final resting places of the stars, including Michael Jackson, Janis Joplin and -- as of late -- Whitney Houston.
Washington DC, USA
Gross National Product (the comedy troupe, not the economic output) offers a regular tour taking in the scandals and coverups of Washington DC, now including the Congressional Gym where Anthony Wiener "twittered his tweeter to the world".
Jack the Ripper Tour
Fancy taking a jaunt through the darkened, terrifying street of Jack the Ripper's London? This tour takes visitors on a journey into Whitechape a century ago, to the final resting places of the Ripper's victims.
Delhi Slum Tour
This glimpse into the live of Delhi's poorest street children has been criticized as 'voyeuristic purism', but organizers claim it offers an opportunity to understand the problems and for the children to communicate.
Professionally coached homeless guides offer visitors to London a view of the city through a totally different lens in this award-winning project, which claims to introduce 'a new social consciousness into commercial walking tours.'
Amsterdam, the Netherlands
This tour takes visitors through the weaving alleyways and seedy saloons of Amsterdam's famous red-light district, including time to chat with a former prostitute to better understand the rules, regulations and culture that makes Amsterdam unique.
The border that a separates the two Koreas is the most heavily armed in the world, but that doesn't stop hordes of tourists turning up for this popular day trip. Visitors can explore North Korea's infiltration tunnels and get into Panmunjeom, the Joint Security Area in the middle of the DMZ where negotiations between the two sides are held.
Belfast, Northern Ireland
This walking tour is led by former political prisoners from Belfast's loyalist and republican communities who share their own perspective on the decades of conflict which divided the city.
Helter Skelter Tour
Los Angeles, CA, USA
This tour offers a three-hour immersion into the world of the Manson family, following the trail of the Tate and LaBianca murders committed in the late 1960s.
Slavery and Underground Railroad Tour
New York, USA
The Underground Railroad was once used to transport slaves from captivity to freedom along well-worn routes dotted with historic homes and churches. This tour takes in the route of the 'railroad' and tells the stories of New Yorkers who risked their lives to help slaves escape before abolition.