More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

A corkscrew-shaped barn in Ireland.

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

A sacred well steeped in Pagan roots on the West Coast of Ireland.

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

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

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

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

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

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

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

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

A New Jersey state park that was once Napoleon's brother's sprawling estate.

A mixture of strange symbols, ciphers, words and cryptograms carved in 1876 remain unsolved to this day.

In the 19th century, this canal provided power to mills, machine shops, and other businesses in the area.

A small cave hidden deep within the Jenny Jump State Forest.

Prank calls to this place, originally the "Tube Bar," inspired the creation of a Simpsons character.

A condo complex once housed a boarding school with the 24th U.S. Vice President among its notable alumni.

One of the last-standing and most prominent structures from a long-lost colonial port community.

Take a step into the workshop where Edison and his employees revolutionized the world.

Nassau Hall has served as army barracks, a museum, and played a key role in the American Revolution.