Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

In 1914, Archduke Franz Ferdinand spent his final night alive at this luxurious hotel.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

This ironic war memorial thumbs its nose at a campaign of inedible humanitarian aid food products.

Some of the best-preserved specimens of the monumental medieval tombstones found throughout Bosnia and Herzegovina.

The hallucinogenic center of the ancient world.

This 200-meter-high waterfall marks the site of Achilles’s immortal baptism at the mouth of the River Styx.

The “Thumb” of Mauritius provides a 360 degree view of the entire country.

This monument sits at the foot of a mountain from which legend says enslaved people jumped to their deaths.

Only two of these trees remain in the natural world, found high in the cloud forest of the island of Mauritius.

On one of the world's most active volcanoes, a pebble-filled crater changes color with the wind.

Réunion Island's highest point is a 2 million-year-old volcano and a paraglider's paradise.

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

When construction began on this hotel, developers were surprised to find the ruins of an ancient civilization.

The ruins of an ancient fortification wall sit in front of and underneath this boutique hotel.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

This ancient hydrological marvel is now the base of a modern outdoor cinema.

The only ancient site that remains on the south bank of the sacred Ilissos river.

Gladiators once walked this ancient, subterranean passage.

This seaside sanctuary was once one of the most important religious sites for women in ancient Greece.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

According to legend, this cavern holds the passage that Persephone used to travel to and from the underworld.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.