Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

This legendary city has been a tourist attraction for centuries.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Everything from miniature biblical scenes to life-sized statues are almond-based at this sweet and nutty gallery.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Romania's triumphal arch looks out over Bucharest.