This turn of the century masterpiece has a mysterious goaty interloper.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

San Diego's most historic and haunted home.

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

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A hotel and restaurant serving as the mecca of kitsch.

Olfactory delights in San Francisco's Botanical Gardens.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The ghostly remains of an accidental sea.

A winding path built in secret on the edge of the continent.

A huge musical instrument played by the ocean.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

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.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This structure was moved nearly 40 feet while people continued working inside it.