This Welsh hotel is the spiritual home of the British 1953 Everest expedition, the first successful ascent of Mount Everest.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

The stately remains of Llywelyn the Great's mighty fortress.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

The remains of centuries of copper mining appear like an alien landscape.

The wreck of a B-29 Superfortress now stands as a memorial left in the moors.

A remarkable medieval structure born from a 14th-century disaster.

One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.

An unusual artwork dedicated to a unique man that entertained people visiting Cambridge while raising money for charity.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

A complicated contraption for telling time by the moon.

The broken skateboards that became a poignant memorial to a murdered skater.

A hands-off space for graffiti artists to hone and display their skills.

The anatomical-pathological collection of a man who changed surgery.

A tongue-in-cheek arcade where the games are based on everyday life.

The metal leaves on this tree are engraved with the names of Holocaust victims.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.