Yugoslavia's biggest underground airport lies in ruins.

This narrow fjord-like bay is the largest ria in the Mediterranean Sea.

A peculiar museum that includes many drunken tales, a drunk driving simulator, and much more.

Inside this small chapel tucked away in the forest is one of the most well-preserved Danse Macabre frescos.

This 135-year-old weather station studied the effects of the climate on human health.

This military tunnel dates back to World War II and provides visitors with a little wartime adrenaline.

A tower marking the spot where Yugoslavia began its resistance against the invading Nazis stands neglected, but not quite forgotten.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

Legend has it fairies gathered at the site of this medieval castle.

An ethereal glowing blue ocean cave in Croatia.