Where one of the worst train disasters in the country took place, leading to upgrades in rail safety.

Deep below the dry landscape of Bahia, a cave with intense blue water to float in.

Three large boulders covered in mysterious carvings and graffiti.

The ruins of this Roman temple dominate the small city in southern Lazio.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

This 19th-century museum inside of a lighthouse is only accessible during low tide.

This seventh-century fortification marked the western border of the Lombard duchy of Spoleto.

Only three columns survive from this ancient temple in the town of Cori.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

This massive basalt sea stack stands obtrusively from the rocky coastline.

Unscathed for almost 2,000 years, the best preserved Roman triumphal arch is in a small southern Italian city.

A sad reminder of the World War II bombing stands largely unnoticed on a street corner.

A 150-year-old steam locomotive crosses the southern half of the island daily.

This medieval mountain town is also known as the "Village of Streams."

These ancient pecked images are among the oldest and best-preserved in Mongolia.

The ruins of a 12th-century Cistercian monastery can be found alongside World War II tank traps and pillboxes.

According to the legend, this structure was built in a single night with the help of the devil.

A century-old stone hermitage overlooks this remote pass in the Hoggar mountains, surrounded by a landscape of eroded volcanic cores.

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

Known for centuries as the famous Roman emperor's burial place, this monument is actually something else.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Its look is severe, but its location, isolated on a hill in the middle of the countryside, is particularly scenic.

A creepy tree with a local legend that inspired a nearby theme park ride.

Believed to hold the remains of Japan's most infamous fox spirit, this stone is said to kill those who dare approach.