Although enlarged in the mid 19th century, the Campo de' Fiori hasn't changed a great deal since the artist Giorgio Vasari etched it in the 1740s, by which time it was already several centuries old. There's a rustic feeling to this square, with its undulating cobbles and its higgledy-piggledy skyline, made up of umber and yellow facades of all shapes and sizes seemingly thrown together at random. One side is lined with restaurants and pizzerias, a riot of brightly coloured awnings and chequered tablecloths. For hundreds of years a place for buying and selling, the Campo is now the site of a thriving market. A large bronze statue of the astronomer and mathematician Giordano Bruno (who was burnt at the stake for heresy on this very spot in the year 1600) stands in the midst of all this hustle and bustle, looking down like a kindly superhero from under his hooded cape on stalls selling fruit and veg, slabs of porchetta al forno and pecorino, jars of black truffles and extra virgin olive oil, sun dried tomatoes like heaps of coral. After browsing this foodie's delight, you can top up your water bottle at a charmingly battered old drinking fountain at the other end of the square.