One part local history, 99 parts gruesome haunted house.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

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

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

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

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

It might not be the prettiest pyramid in Egypt, but it may be the muddiest.

This nightmarish children's plaything was left grotesque to help kids conquer their fear.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Breathtaking and huge 430 year old maps of Italy.

An ancient stone fortress considered by many to be the eighth wonder of the world.

New Zealand's epic shrine to all things puzzling.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A perfect turquoise lake colored with glacier dust.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

This strange geological landscape erupts with sudden bursts of water.

Tubing through a cave lit with glowworms is a magical underground experience.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

Handcrafted thermal spa washes away each night with the tide.

The platform atop this verdant volcano was built with the help of a royal elephant.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.