This is the real-life “Phantom of the Opera” box from Gaston Leroux's 1910 novel.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

A haunting collection of the vanished and disappearing natural world.

This 18th century mansion played Winterfell in Game of Thrones.

A striking symbol of the Troubles, this semi-demolished prison was home to the largest prison escape in the history of the British Isles.

The decaying giant of Ulster’s lost linen empire.

A towering steel-and-bronze figure whose playful nickname outshines its official message of hope

A relic of the region's rich seaweed industry.

Being surrounded by typical buildings just makes this uniquely modernist house stand out even more.

The ancestral home of the 21st president of the United States of America.

The atmospheric road was never meant to be so creepy.

A 21-foot-tall pyramid in a Northern Irish woodland marks the grave of... nobody.

A two-storey cabinet of wonders filled with the bizarre, the macabre, and the downright uncanny.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

This aging storage facility is the world's largest brick warehouse.

This abandoned lock-up was saved because of its connection to a local football team.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Much of what constituted mid-century Liverpool now litters a beach outside of town.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

These rose marble urinals are the most luxurious loos in Liverpool.

A memorial to the politician who became Great Britain's first fatality to be caused by a locomotive.