This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The celebrated eyesore created by starry-eyed sweethearts.

A museum marks and documents the site of the Titanic's launch.

Northern Ireland's Brobdingnagian stepping stones.

The lake that fills and empties itself at random.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

One of Europe's oldest libraries.

The beams of the New College, Oxford dining hall come with an amazing story.

One of Ireland's most infamous prisons for rebels including men, women and children.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Quite simply the largest tree in the world (by volume).

Why have you never heard of the second most popular tourist site in New York?

A hotel and restaurant serving as the mecca of kitsch.

An alley covered with 20 years of bubble gum.

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

The final resting place of soldiers' loyal canine companions.

A century-old tradition has culminated in a small but singular collection of feline effigies.

A museum dedicated to the alleged Roswell Incident.

Famously misunderstood wonder of the ancient world

Go inside to really appreciate this 500-year-old technological masterpiece.

The topiary maze at the Habsburg hunting lodge.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.