The men’s title is still up for grabs. The Red Bull Cliff Diving World Series returns to Athens, Greece, for its 15th season, revisiting the 2009 finale site.

How did the 24 divers, led by Australia’s Rhiannan Iffland and Constantin Popovici from Romania, maintain their momentum during the longest break between two competitions?

Where to skip: Santorini and its endless crowds—all vying for the same Instagram shot of the white domes—will always be there ...