The lights of the Eiffel Tower in Paris were extinguished on Monday, 21 April, as part of a tribute to the late Pope Francis.

What do a biblical psalm, a Coolio classic, and one of the world's oldest cities have in common? Explore the ancient history ...

From hilltop citadels to fortified coastal enclaves, we've scoured the world to find the most captivating walled cities, and ...