The US State Department regularly warns American travelers of dangers they may face abroad. Among its list of countries Americans are urged not to travel to are those with regular conflicts, like Yemen and Sudan. But those aching to get out of the States and travel might be surprised to find that some of the world's most popular tourist destinations are under the department's list of countries to "exercise increased caution" in.

That said, because a country isn't on this list doesn't mean you're safe, and vice versa. Travelers should always be mindful of their surroundings while abroad.

Here are 15 popular tourist destinations the US State Department recommends Americans be wary of.