These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

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."

Though they've since been renamed, these two streets hint at Dublin's darker days.

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

The oldest public library in Ireland.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

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

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.

Across the islands, baked goods, sauces, and much more are for sale 24/7.

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

One of Ireland's most infamous prisons for rebels including men, women and children.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

A marvel of technology a century ago, this disused power station now offers a lovely glimpse into the industrial design of the past.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

A scene from one of Hungary's most famous novels.

A giant glider—designed by the father of the Rubik's Cube's designer—now soars within a shopping mall.

The largest statue of this convex, homogeneous object with just one stable and one unstable equilibrium point.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

This building has survived for more than a century and remains virtually untouched.