Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

This only museum in the world dedicated solely to mushrooms.

This modern, multimedia museum takes visitors on an evolutionary journey back in time.

Inside this mansion turned museum, the works of prominent Croatian artists are on full display.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

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

Longest fortress system anywhere in Europe.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

Gargoyle head that brings good luck.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

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

A wonderfully strange collection of 500+ stuffed frogs doing people things.

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

An ethereal glowing blue ocean cave in Croatia.

One of the most exquisite Lycian hilltop citadels in Turkey.

Quite possibly the oldest love poem known to humankind.

An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

Brawny guys rolling around in oil is the oldest regular sporting event besides the Olympics.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

This hidden gem is bathed in beautiful natural light.