"Overlooking Athens You can’t miss the Parthenon, the majestic ruin towering above Athens . Originally painted in vivid hues, this feat of architecture, engineering, and artistry is still as awe-inspiring as it was almost 2,500 years ago. Le Corbusier, pioneer of modernism, called it the most “ruthlessly flawless” monument in the world. Hold on to your admission ticket: It’s valid for several other archaeological sites on the slopes surrounding the Acropolis, including the Agora and theater of Dionysus."