One of Australia's largest secondhand bookstores.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

Large miniature theme park with 100-plus models.

A chemical factory damaged by two earthquakes and an explosion that became abandoned after bankruptcy.

An old spa town in the mountains of Romania where, according to legend, the great hero Hercules once bathed.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

This once-derelict building is now one of the most beautiful bookstores in the world.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This supermarket offers shoppers a window into the past alongside their groceries.

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

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

At this cozy bar tucked down a hidden Galway backroad, Guinness makes the Gaelic come out.

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

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

A moody and picturesque riverside ruin overgrown with vegetation.

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

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

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

Step into Narnia at this small park featuring statues from "The Lion, the Witch, and the Wardrobe."

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.