They are the first Rugby Union side to win three European titles in a row.
It wasn't fluke either: a ruthless money man and years of subsequent investment have taken Toulon up the leagues to the top.
But now they want to leave their domestic league to play in the English Premiership.
This is Toulon's story - big money, big names, big muscles and un oeuf.
Meet Mourad Boudjellal, who made millions from his comic book business.
He's brought some of the biggest names in the sport to the club, and cut them loose too.
He's currently not happy with the organisers of the Top 14 League over the current salary cap.
As a result he says he wants his side to play in the English competition, but given the salary cap is roughly £2m less across the channel, it's unlikely.
Where do you begin? Proven winners from both hemispheres have made their way to the south of France to typically see out their careers.
The more lenient French salary cap is a big pull for some players, as well as a French lifestyle perhaps.
Jonny Wilkinson was arguably the most famous and he's been followed by names like Bryan Habana, Drew Mitchell, Leigh Halfpenny and Steffon Armitage.
There are some French players there, honest.
It's not easy to go and win at their ground either
Sitting just off the Mediterranean coast, the Stade Mayol is relatively modest in size with a capacity of just more than 15,000 people.
But the complete style rugby on display, combined with a partisan crowd and a man with a tattooed face chanting before matches, it's a bit of a cauldron.
As is often the case with sport, money really can buy your team success, and Toulon is no exception.
Three European titles on the bounce is a huge achievement and they've also won the domestic Top 14 in 2014.
With the huge signings showing no signs of slowing, Toulon will be hoping the medals don't stop either.
The English title is a bit of a reach at this stage though.