This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

A serene plaza that commemorates one of the Granite State's most iconic figures.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

Site of the first pathological and bacteriological research facility in the United States.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

One man's swirling six-acre monument of stone.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

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

The modern birthplace of Irish freedom.

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

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

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

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

New York's southernmost subway station is whimsically wavy.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

The most confusing clock in New York.

Lie in a hammock where George Washington stood.