Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

The hotel room where Janis Joplin tragically died has now become a makeshift shrine to the singer.

3,000 family pets and military animals are buried in this London graveyard.

The final resting place of a German diplomat's beloved companion.

A sculpture of a famous ape who was once a beloved household name in London.

Hidden in the courtyard of the Victoria and Albert Museum is a little-known tribute to two celebrity pooches.

This studio was home to David Bowie's first single, even if it did turn away the Beatles.

This London marker celebrates the spot where the world-famous English band was founded.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

A memorial to a dog that inspired rioting in the streets of London.

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

Eclectic final resting place of the controversial explorer.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

A Roman spa buried deep beneath the City of London.

Dictionary Johnson’s favorite feline.

This London plaque marks the spot where David Bowie's famous alien made his debut.

The final resting place to 300 Victorian-era pets hides inside the city park.

A meow-velous tribute to a beloved street cat, made famous on the internet.

The curious underground history of keeping Paris clean.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

One of the last realized projects of an influential, self-taught, French Modernist architect Jacques Couëlle.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

Indents in the pavement are all that remain from a grisly death machine in Paris.