They were destroyed somewhere near Brazil.

In 2014, UNESCO gave Italy two years to manage Venice's flourishing tourism or the city would be placed on another list—World Heritage In Danger, joining such sites as Aleppo and Palmyra,destroyed by the war in Syria.

Brazil opened a research station in 1984, but it was largely destroyed by a fire that killed two members of the navy in 2012, the same year that a diesel-laden Brazilian barge sank near the base.

Now, Africa's largest economy is facing a food crisis as major tomato fields have been destroyed by an insect, leading to a nationwide shortage and escalating prices.

The insect, Tutaabsoluta, has destroyed 80% of farms in Kaduna, Nigeria's largest tomato-producing state, leading the government there to declare a state of emergency.