Two stone columns flank the grand Venice square, but there were supposed to be three.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Geothermal waterfalls in Tuscany.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

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

The world's largest wooden structure.

A Spanish town built into the cliffs.

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.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

A museum dedicated to the centuries-old cave dwellings that housed marginalized communities on the outskirts of the former capital of Muslim Spain.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Elaborate tile work in this railway station tells the story of Portugal.

This historic streetcar system has been running since the 19th-century.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This small chapel is built of human bones and decorated with a golden skeleton.

The Hindu god Vishnu is said to have walked at this Hindu pilgrimage site.