The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

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

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

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

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

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Largest lake in Great Britain measured by surface area.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This monument to one of the largest science fiction games of all time bears the names of hundreds of thousands of players.

This tiny museum's sizable collection is jammed into a former underground public toilet.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

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

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

A sulfuric martian landscape that looks far better than it smells.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This elegant arc of a waterfall marks a religious turning point.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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

Reminders of the Battle of Berlin still scar the railway.

Metro station with a claim to rock n' roll fame.