Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Unicorns, elephants, and bears, oh my!

A 60-room castle constructed by a horse-racing heir.

Mysterious stone tower featured in many alternative histories of the New World.

Oldest synagogue in the United States.

A promotional sun clock on the site of San Francisco's great raceway.

One of Ireland's most infamous prisons for rebels including men, women and children.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

An unusual manor of stunning beauty, born out of a crippling disease.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

An old whaling station now serves to give the public a look at the commercial whaling industry, no longer a part of Monterey's economy.

This remarkably simple jail went over a century without an escape.

Devoted Buddhists can earn enlightenment in the next life by crawling through this symbolic nostril.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

This legendary city has been a tourist attraction for centuries.

A creepy steel gremlin has protected the Bay Bridge since 1989.

The world's largest natural arch was forgotten for over 50 years after its discovery.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."