Stockholm's deepest subway station is also a stunning ecological wonder.

Stockholm's tiniest statue is of a small boy looking at the Moon.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

A man has revenged his true love's betrayal through tears and stone genitalia.

Finally reunited, the three effigies now stand in a museum courtyard.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

The final resting place of one of the brightest physicists of the 20th century.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A walk through the historic city center, under the streets of Seattle.

This giant wooden treehouse within a sprawling garden has its own eatery.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.