One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A 140-year-old castle with underground caves hidden in San Francisco.

A tribute to a unique bike race that takes place every year.

California's most comprehensive horticultural library.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Surprisingly delicious Asian-style hot dogs.

This enormous photomural pays homage to Vancouver's infamous history of public activism.

A unique spiral staircase that doesn't quite make it up to the top floor.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

One of the largest trees of its kind in California.

North America's largest accredited model railroad museum.

San Diego's most historic and haunted home.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

Visible below the waves are memorials to the city's Gold Rush dead.

The only visible piece of San Francisco's most famous shipwreck.

This contorting sculpture is the tallest in San Francisco.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Mai Tais and Navy Grog served up in one of the original tiki bars.

The tea room that pushed the boundaries of adorable straight into... we can't find the words.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.