Tea or coffee? David Tennant on the Gracepoint set. February 11, 2014.
Adriatic Cliffs (Petrovac, Montenegro). Photograph by Nikolay Sapronov
The Blue Cave is one of Montenegro's top attractions. It's a small cave that you can only get to by boat and it's famous for its iridescent blue that makes the whole cave glow. Find out about the cave and where to find a tour here.