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.

Quite simply the largest tree in the world (by volume).

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

San Francisco's newly reopened hands-on science museum.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

The UK's oldest theme park slowly slips away.

Giant naked man on a hillside.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

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

Famously misunderstood wonder of the ancient world

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

A well for a well, this anachronistically Indian-styled water pit was built in its small town home in gratitude for a similar favor.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

The granddaddy of English geoglyphs dates back to the late Bronze Age.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

Museum celebrating the history of computers, especially their role in codebreaking.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Seat of the Duke and Duchess of Devonshire for centuries.