The Wizard of Oz (1939): Characters by Picture

Can you name all the countries that have ever been members of OPEC, the Organization of Petroleum Exporting Countries?

Name the 20 cities ranked as the world's top financial centers according to the Global Financial Centres Index.

Twenty three cities have hosted the Summer Olympics at least once. Can you click them all without making any mistakes?

Drag the flag onto the correct state. Careful, though! One wrong move and the game ends.