Ghana is 42,793,864 times larger than Parliament Square.
Area: 238,533 km2 World Factbook
Population: 25,758,108 (July 2014) World Factbook
Ghana, officially called the Republic of Ghana, is a sovereign multinational state and unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic Ocean, in the subregion of West Africa. Wikipedia
Area: 0 km2 calculated
Parliament Square is a square at the northwest end of the Palace of Westminster in London. It features a large open green area in the centre with trees to its west and it contains ten statues of statesmen and other notable individuals. Wikipedia