Abstract dinosaur models in London.

The remains of Crystal Palace Great Exhibition of 1851.

This hidden green space is the city's second largest conservatory.

Remnants of a Victorian garden feature sitting in public woodland.

A little slice of Japan and its aesthetics in London's Holland Park.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

An architectural oddity hides in plain sight on this iconic London bridge.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

A shrine to a skeleton saint in the city of angels.

An Airy Would-Be Solution to a Housing Shortage.

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

This park is home to California's first oil boomtown, with structures that have stood for more than a century.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

This bridge over the River Cuale leads to a neighborhood that was once an escape for Hollywood's elite.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

This is the oldest Roman-made bridge in the city still existing in its original state.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

A treasure hunter's tiny bar, harboring celebrities since 1959.

A bright California graveyard with a decidedly dark side.