The decaying ruins of Wales' first asylum for the mentally ill.

Go deep down into the earth to experience the world of Welsh coal miners.

The only medieval bridge in Britain with its defensive tower still in tact.

This former Welsh metal factory is now a lovely abandoned relic but was once one of the industry's world leaders.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

A subterranean playground in an abandoned slate mine.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

It's possible to walk inside one of the largest Neolithic tombs in Britain.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

This hilarious English intersection is an automotive whirlpool.

A miniature village mimics the surrounding buildings so well it includes itself.

Puzzles within puzzles hide a golden treasure in this hedge maze.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.

One of Europe's oldest libraries.

Home to the most complete dodo remains known - one head, and one foot.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.