1) The Great Barrier Reef in Australia is the largest living structure on Earth and can be seen from space.

2) The Treaty of Versailles, signed in 1919, officially ended World War I and imposed heavy penalties and reparations on Germany.

3) In Greek mythology, the Minotaur is a mythical creature with the head of a bull and the body of a man. It dwells in the labyrinth of King Minos of Crete and is eventually defeated by the hero Theseus. The Minotaur symbolizes the primal and monstrous nature that resides within human beings.

4) The fastest land animal is the cheetah, capable of reaching speeds up to 70 miles per hour (113 kilometers per hour) in short bursts.