The second biggest waterfall in the world is the niagara falls!
The second biggest country in the world is: Canada9,330,970 sq km, (3,602,707 sq miles).
Russia is the biggest in area and the fourth largest in population. Russia is the biggest country in the world, and Canada is the second biggest country.
The second biggest in passenger traffic is Beijing Capital Airport in China.
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Africa
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Istanbul is the second largest city in the world by city proper. Seoul is the second largest city in the world by metropolitan area.
AfricaAfrica is the second biggest continentAfrica
Africa is second with 11700000 square miles