San Francisco is just seven square miles at the tip of a peninsula surrounded by the Pacific and San Francisco Bay, which meet at the Golden Gate.

BBC: The perfect trip: California

Nigeria clashes sporadically with Cameroon over a disputed oil-rich maritime border, a 1, 000-square-kilometer area off the Bakassi peninsula that may contain as much as 10 billion barrels of oil as well being rich in fish.

FORBES: Magazine Article

The agency's Envisat satellite shows part of the Larsen Ice Shelf, which lies on a peninsula south of Chile, has decreased from 3, 463 square kilometers (1, 337 square miles) in March 2002 to 1, 670 square kilometers (645 square miles) today, a change the European Space Agency blames on warmer temperatures.

CNN: Satellite documents thinning ice shelf