This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

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

360° views of the city plus five floors of optical illusions and hands-on science.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

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.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

This abandoned hospital village was once viewed as an innovative way to deal with mental illness.

This hill nestled in the Scottish lowlands was a ritual site for over 4,000 years.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

A six-ton wedding present for the King of the Scots.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A sweet symbol marks the place where torturous executions were once carried out.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

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

Protecting the dead from opportunistic body snatchers.