3. Pont du Gard, Gard River, France
France is loved by those who are interested in history. Only here you can find fantastic castles and palaces not found anywhere else. The Gard is a river known for its special bridge called Pont du Gard. This is an ancient structure that was built by the Romans over 2000 years ago. First it was an aqueduct and provided people with 5 mln. gallons of water every day.