A watercolor recreation of a famous fresco unearthed at Pompeii.

A physical reminder of Earth's ancient past, this rock results from the photosynthetic processes of some of the oldest forms of life.

See prehistoric footprints, plus two complete mastodon skeletons.

An ever-evolving wall of graffiti art off East Liberty Street.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

An out of this world experience.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Catacombs turned marketplace.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

An unusual round church in London with a Templar past.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The medieval woodcut-style artwork chronicles life in medieval London.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

An effigy of Vancouver's Gastown neighorhood's namesake.

This giant spider sculpture made from the iconic car is one giant visual pun.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Common all over Japan, kōbans are small community police boxes, and now one is guarding one of L.A.’s megamalls.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A small sculpture garden that provides a microcosmic representation of California.

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

The oldest structure in a beachside California city was built to serve eight students.