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

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

You can walk up Thailand’s naturally non-slip waterfall.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

The Renaissance-era courthouse is a relic from the fortified town's centuries of Venetian rule.

Each year melting snow turns these Austrian hiking trails into scuba zones.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

A fortified city, home to a remaining population of five families

Geothermal waterfalls in Tuscany.

Longest fortress system anywhere in Europe.

One of the most spectacular canyons in the world.

God's Saharan sandbox of wrath.

A tiny church on a man-made island in the Adriatic.