Learn about the sweet, storied legacy of beekeeping in ancient Greece.

A dark, narrow tunnel that leads to a charming lake and waterfall.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

One of the best-preserved medieval streets in Europe.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

Roman ruins top white travertine terraces formed by ancient hot springs.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

This 47-story "M" needed 20 years to be completed

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

The highest point of this Balearic island is home to a historic monastery.

This remarkable prehistoric town is full of watchtowers and houses that have withstood thousands of years.

The largest cave on the island of Menorca was likely the site of Iron Age rites and rituals.

These Stolpersteine located in Spain honor Republican soldiers who perished at the hands of Nazis after the fall of France.

An old quarry transformed into a recreational and cultural space.

This historic electric train has operated with regularity since the early 1900s.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A lush indoor jungle fills this bustling Madrid transportation hub.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

This colorful statue welcomes visitors to a Barcelona park.