Monte Carlo is known as a haven for the rich and famous. With its beautiful coastline, striking architecture, epic casinos and lax tax laws, it's no wonder why. The likes of Leonardo DiCaprio, Bono, Jay Z and Elton John all have homes here. If you're not trying your luck in the casinos or checking out the upscale boutiques, you could spend hours just standing in awe at the luxury yachts that line the harbour.  But despite all the excess and modern luxuries, Monte Carlo is actually one of the oldest cities in Europe, with occupation dating back to the stone age.