Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

Come crisp December nights, this fairly plain neighborhood becomes a holiday dream world.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Most famous work of one of Frank Lloyd Wright's sons.

This glamorous old building is said to have inspired the Tower of Terror.

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

A hotel and restaurant serving as the mecca of kitsch.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The legendary building that needed ghostly approval before being built.

Statue dedicated to the star of an old television show.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

An artist's cute bronze subway sculptures belie his violent artistic past.

Elevated freight railway turned wildly successful urban park.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

France's most famous cemetery, with some of its most curious tombs.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

A small island hides in plain sight on Austin's Lady Bird Lake.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Austin’s nonprofit-run graffiti park where street art is meant to be painted over.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Just like the real 36th president of the United States, animatronic LBJ amuses visitors with jokes and stories.