This beautiful 19th-century temple stands atop the ruins of its predecessor.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Along this stretch of Indiana roadway resides a giant insect composed entirely of scrap metal.

A wartime promise becomes a shrine to Our Lady of Lourdes.

The largest historic preservation organization in the United States.

The bespectacled, cocktail-sipping pachyderm is a strange but fitting liquor store mascot.

The first artificial white water river course in North America cuts right through an Indiana city.

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

A medical facility that has been kept frozen in time.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

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

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

In this century-old literary safehouse, print is alive and well.

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

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

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

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A Boeing mechanic and his wife leave a whimsical, stone sculptured garden as their legacy.

A 1,000 pound brass bell commemorates a time when this small maritime neighborhood was actually its own separate city.