Huge masonic hall in Philadelphia with lavishly themed rooms.

This elaborate towering structure was once famed for its revolutionary height.

Venture into the past with an unlisted exhibit hall featuring extinct birds.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

A daily replay of the experiment that proved the rotation of the Earth.

Dr Barnes' $25 billion private collection of art and arboretum.

The world’s first penitentiary, meant to be humane, drove men insane.

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 sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

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

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

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

A hugely vast Irish landscape of barren rock that stretches for miles.

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

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.