Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

The most loyal of little dogs, or a Victorian era publicity stunt?

This 16th-century house tells the city's history through old artifacts and quirky tales.

Protecting the dead from opportunistic body snatchers.

A 18th century graveyard and its astonishing cortege of macabre iconography.

This astronomical clock is the second oldest in England.

The oldest residential street in Europe also features an optical illusion.

Museum about life, death, and cannibalism in the Stone Age.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

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

This generously endowed statue once stood guard outside a Roman home.

A stately palace has been converted into the world's largest cannabis museum.

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

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.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

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

Mountain where Jesus was first tempted by the Devil.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.