Guam is 87,138 times larger than Grand Army Plaza (Manhattan).
Area: 544 km2 World Factbook
Population: 161,001 (July 2014) World Factbook
Guam is an organized, unincorporated territory of the United States in the western Pacific Ocean. It is one of five U.S. territories with an established civilian government. Wikipedia
Area: 0 km2 calculated
Grand Army Plaza lies at the intersection of Central Park South and Fifth Avenue in front of the Plaza Hotel in Manhattan, New York City. It stretches from 60th to 58th streets between East Drive and Fifth Avenue. The idea for such a plaza was first proposed by sculptor Karl Bitter in 1898. Wikipedia