In Barcelona, Gregg visits Gaudi's masterpiece, the Sagrada Familia, before heading into the backstreets to sample some traditional Catalan dishes.
Gregg's adventure begins in Rome, where he gets stuck into the city's culinary delights and enjoys some Roman culture.
Gregg samples the tastiest bits of the Scottish capital.
In York, Gregg samples a rhubarb-based menu.
Gregg heads to Athens, where he visits the Acropolis.