This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

These 2000 year old remains of a Roman aqueduct are hidden inside a hotel lobby.

An eclectic collection of thousands of items owned by the sculptor Frederic Marès.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

This fountain was designed to honor the man who helped bring water to Barcelona.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

An impressive display of ships and artifacts from the ancient Mediterranean maritime trade.

This plaque tells the story of an event that took place in an imagined parallel universe.

The first Russian Orthodox church in North America and an Alaskan landmark.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

It's said this was once the home of King James V's pet lion.

An abandoned Soviet-era park that, when viewed from the air, looks like a pentagram.

A pub that is literally in the middle of nowhere, but continues to do business.

Geodesic dome luxury retreat in the Scottish Highlands.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

This mountain is one of the largest in Scotland but is better known for its hollow insides.