This repurposed church offers a more literal way to get closer to the heavens.

One of Edinburgh's oldest pubs hides a 19th-century skittles alley in the back.

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

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

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

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

This stunning concert hall has become a symbol of Iceland's national recovery.

These concrete domes were installed on an Icelandic bluff to honor a very specific musical tradion.

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

This wild explosion of color on a disused water tower tells the whimsical tale of a curious puffin.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

A network of concealed passageways lies within a busy London Underground station.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A kaleidoscopic warehouse-maze of handmade neon signs.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.