A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

A unique geological area spiked with wind-carved rocks that resemble teepees.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

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

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

The ancient tomb acts as a calendar that keeps perfect time.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

An ancient neolithic tomb that only sees the sun twice a year.

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

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

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

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

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

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."

The modern birthplace of Irish freedom.

Preserved "bog person" that is over 2,000 years old.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.