This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world’s largest coastal brick fortresses.

Live chainsaw carvings of tiki statues aim to keep a tradition with ancient roots alive in this small Delaware town.

One of the world's first dedicated bank buildings in the world is now the oldest one.

A concrete mushroom that divided Stockholm residents for nearly a century.

Unfortunately, you can no longer spend a night in this single-person treetop hotel.

One man's fascination with Turkey led to this backyard mini-city.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Frequent fliers welcome in this airplane hotel.

Stockholm's narrowest alley is barely over two feet wide.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

Statue of death tucked in the University of Medicine courtyard.

The tomb of history's greatest potato promoter is surrounded by tubers.

The video game-themed street art first popped up in the French city.

This demon atop the Notre-Dame de Paris looks utterly bored.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

The trials and tribulations of marking Poe’s grave.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

How did a French journalist’s grave become the sexiest statue in the cemetery?

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

Where Venice's gondolas go for a tune-up.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.