Whispering galleries — like St. Paul's Cathedral in London — allow whispers to travel around the walls.

Most lottery winners lose much of their money within a few years.

The Ramayana, one of Hinduism's great epics, tells of Prince Rama's quest to rescue his wife Sita from the demon king Ravana.

The Olympic Games are held every four years.

The word 'OK' is one of the most recognized expressions worldwide — likely originated from a playful 19th century American abbreviation fad.

Opera was invented in Florence around 1600, originally as an attempt to recreate ancient Greek theater.

The Portuguese word 'saudade' describes a nostalgic longing for something loved and lost — it has no direct English equivalent.

The gamelan orchestra of Indonesia uses percussion instruments tuned to local scales that differ from Western temperament.

In Norse mythology, Odin sacrificed one eye to drink from the Well of Wisdom and gain cosmic knowledge.