The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

France's national museum of scientific and industrial instruments.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This museum houses an imposing skeleton army comprised of creatures great and small.

A museum of carnival attractions where you are invited to ride the rides.

This massive library holds what was once the largest book collection in the world.

Fluffy and friendly alpacas nestled against the border of the beautiful Connemara region.

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

On the Irish coast, 18 members of the Howard family are eternally resting in an Egyptian pyramid.

Modern sundial uses ancient methods to tell time and date perfectly.

Wallabies live naturally on this Irish island.

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

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

A stunning Victorian abbey and walled garden on a lakefront.

The home of Ireland's last leprechauns is officially protected by the European Union.

The world's tallest box hedge is found in a delightful garden.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

An 1814 castle that hosts an exhibit of "explorabilia".

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

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

A moody and picturesque riverside ruin overgrown with vegetation.

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

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