The risk of a potential terrorist attack spurred The State Department issued a travel alert Tuesday to Americans who plan to travel to Europe this summer.
The warning centered around the high profile European Soccer Championship taking place from June 10 to July 10 in France.
"Euro Cup stadiums, fan zones, and unaffiliated entertainment venues broadcasting the tournaments in France and across Europe represent potential targets for terrorists," the alert read.
Poland will also host the Catholic Church's World Youth Day in Krakow and the event is expected to attract up to 2.5 million people.
