1) The Southern Ocean surrounds Antarctica and is the coldest and least-visited ocean.

2) The ancient city of Athens, Greece, is often considered the birthplace of democracy, where citizens had a say in the decision-making process.

3) The FIFA Women's World Cup has been held since 1991 and showcases the best women's national soccer teams from around the globe.

4) The first modern health insurance policy was introduced in Germany in the late 19th century.