A modern-day astronaut, floating in space, with a spaceship and planet Earth in the background, symbolizing the historic achievements in space exploration and the vastness of the universe.

A medieval knight in full armor, standing proudly in front of a large stone castle, with a sword and shield at his side, representing the chivalry and bravery of the Middle Ages.

A regal-looking ancient Greek philosopher, dressed in a toga and holding a scroll, standing in front of a majestic marble column, surrounded by lush greenery and a warm sunset glow, symbolizing the rich history and wisdom of the ancient Greeks.