The Milan World Expo, which just opened, looks like it's going to be a disaster

Five years after Shanghai hosted one of the most successful World Expos, it's Italy's turn to host the six-month extravaganza. The food-based-fair, which opened last Friday, will revolve around the "Feeding the Planet, Energy for Life" theme, with 145 countries from around the world showcasing their efforts to create sustainable food sources.

Previous world fairs have bought us iconic products such as tomato ketchup as well as world-famous landmarks such as the Eiffel Tower.

Italy, like many other countries that have hosted the event, hopes it will provide a much-needed boost to its economy. However, the run-up to the Expo has been far from plain-sailing for the nation, plagued with scandal, corruption, and financial obstacles.