Some of the saint's blood and bones are said to reside in Dublin.

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.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Discarded animal sculptures stand forgotten by an abandoned aquarium and water park in Bosque de Chapultepec.

This extraordinary art museum is like a secret world on the edge of Mexico City.

The only castle in North America to ever house European sovereigns.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

Twelve natural mummies are displayed in the crypt of this former monastery school.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

A church dedicated to the Mexican skeleton saint.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

Make a wish at what might be America's only Catholic shrine to a sinner.