Travel warnings advising against travel to Peru in February 2013 were strongly opposed by the local government, with ministers calling for U.S. warnings about kidnappings in the Cuzco region to be retracted.
In 2010, the Jamaican government criticized a travel warning against the entire country, when riots erupted in a small Kingston area.
Guidebook author Lebawit Girma was in Jamaica at the time.
"I was amazed at the travel advisories against the whole island," she says. "For anyone who doesn't know Jamaica, it would be easy to cancel plans.
"Jamaica is a big island, so it didn't stop me from heading to my usual spots in Negril and Montego Bay."
More: 8 things travelers in Bangkok should look out for
Ashley Charmers and her husband canceled their travel plans for Turkey in June 2013 due to protests there.
"We had been debating canceling our 10-day trip through Turkey after receiving emails from our families and S.T.E.P.
"Days before our departure we decided to cancel because of concerns regarding serious travel delays and suspensions. Our decision cost us $500."
Even seasoned travelers, who are comfortable in the unfamiliar, can be taken off guard.
In March 2013, travel blogger Oneika Raymond's wallet was taken from her backpack in Aswad, Egypt.
She winces at the memory because she "wasn't paying attention" after making a few purchases.
"Did I feel safe in Egypt? No, not particularly," she says. "After that I found myself very suspicious of everyone."
Have you traveled to places under travel alerts or warnings? Let us know what your experiences were in the comments section.