U.S., Oct. 20 -- Governments have a responsibility to keep their citizens informed about possible challenges and dangers when abroad . The United Kingdom's warnings cover everything from crime and terrorism to health hazards and natural disasters.

These are the latest Foreign Office travel warnings from the UK Government for travelers heading to some of the most popular destinations at the time of year.

Spain

The Foreign Office has warned that there have been political demonstrations taking place in Barcelona and several other areas of the Catalonia region. Further gatherings and demonstrations are likely to take place.

The Government body has warned: "You should exercise caution in the vicinity of demonstrations as they may occur wit...