Visit Brazil's Iguassu Falls, twice as tall as Niagara Falls

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/ Source: TODAY

Twice as tall as Niagara Falls and miles wide, Iguassu Falls is the largest waterfall system in the world, spanning two nations, Brazil and Argentina. Roughly 400 species of birds, many endangered, inhabit the surrounding national park. NBC’s Keir Simmons visits the falls on TODAY, even going under the gushing water as he explores “one of the wonders of nature.” (Run time: 2:35)