Don’t forget, the next episode of Filthy Cities is on BBC2 at 9pm tonight!
Another clip from the episode.
The Eiffel Tower - it's almost as tall as Dan!
Dan finds out how Louise XVI and Marie Antoinette avoided even having to pass through stinking 18th century Paris.
With the help of prosthetic make up, Dan finds out about the deadly Smallpox and how it was eventually eradicated.
In the French National Archives Dan is allowed to handle the orignal document, penned in 1789, which makes the link between rights and the living conditions of normal people.
Dan visits the Palace of Versailles where Louis XVI and Marie Antoinette attempted to distance themselves from the filth of their Parisian subjects.
Dan explores the catacombs below the streets of Paris which were used to solve the ghoulish problem of overcrowding in the cemeteries. It has been estimated that the bones of 6 million people are now stored in these underground passages.