Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A treasure trove of astronomical, mathematical, and scientific instruments at Cambridge University.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

These barriers stand as stark reminders of Northern Ireland's troubled past.

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

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

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

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

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This stone harbor was key to Carnlough's limestone industry.

The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

This giant sculpture is both loved and disliked by the local community.

Commemorating the landing of William of Orange with his European army on their way to the Battle of the Boyne.

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

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

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