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.

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

These engineering masterpieces are a dominant feature of the Belfast skyline.

Belfast's namesake river still winds below the city center, hidden from sight.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

This massive monument has been telling the time for 150 years—at a slight angle.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

The last Victorian market in Belfast.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.