Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

This house renovated by Frank Lloyd Wright was the centerpiece of a lavish 20th-century estate.

Ship-sized kinetic sculptural fantasy.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

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

The plaques around this 19th-century structure recall some rather strange tales.

The oldest working mechanical clock in the world.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

Europe's largest prehistoric mound – burial site of a legendary king?

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Ancient human remains unearthed around the iconic monument.

Famously misunderstood wonder of the ancient world

The first archaeological site discovered by aerial photography.

Experience what life was like in Ireland during the Viking and medieval ages.

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

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

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

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

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

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

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

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.