Boston, Massachusetts. The Boston landmark the Bunker Hill Monument on Breed's Hill was built between 1827-43.

Florida. Lake Okeechobee is a very shallow lake, with an average depth of only nine feet.

Germany. Denmark is split into 443 named islands and controls the territory of Greenland.

Auckland, New Zealand. Auckland is located in the Southern Hemisphere where December is summertime.

Sardinia. The island of Sardinia lies 120 miles west off the coast of mainland Italy.

Hainan. Hainan, an island, the southern point of which lies at a latitude of approximately 16 degrees north.