Dictionary Johnson’s favorite feline.

Buried for centuries, this hidden cellar is all that remains of London's medieval Whitefriars Monastery.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

The last Victorian market in Belfast.

The statue honors a beloved bird that once roamed St. George's Market.

A museum marks and documents the site of the Titanic's launch.

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

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

The atmospheric road was never meant to be so creepy.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

Northern Ireland's Brobdingnagian stepping stones.

The lake that fills and empties itself at random.

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

This overlooked street light once served as a KGB dead letter box.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

The final resting place to 300 Victorian-era pets hides inside the city park.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

This museum inside a museum tells the story of London's timepieces.

Charles Babbage's proto-computer, painstakingly brought to life.

A clock designed to run with perfect accuracy for 10,000 years.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.