This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A unique tribute to the millions of animals who served and died for the British military.

A building claimed to be London’s smallest house has an obscure history.

This overlooked street light once served as a KGB dead letter box.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

This London marker celebrates the spot where the world-famous English band was founded.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

This 19th-century pub features stained-glass windows celebrating Victorian-era “champions.”

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Named for a doctor who made a breakthrough in London’s cholera epidemic, this 1800s pub was also the site of a queer “kiss-in.”

This London plaque marks the spot where David Bowie's famous alien made his debut.

A configuration of a trio of statues that depict a scene reflecting a time emblematic in the city’s rich history.

This five-star hotel was originally a swanky parking garage.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

These 400-year-old ruins are all that's left of the monastery where Ines de Castro was assassinated by the King of Portugal.

This crumbling Portuguese ruin overlooks the populace it once ruled.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

A cluster of granite granaries perched on stilts.

This chapel is the site of a yearly pilgrimage that originated during the Middle Ages.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A popular Icelandic children's story comes to life inside this cave.

Walk in the footsteps of the gods and straddle two tectonic plates.