A mysterious bridge over a sunken Roman road.

Home to one of the tallest church spires in Europe, this historic church once played host to King Henry VIII and Anne Boleyn.

This operational mill has survived centuries of destruction and construction.

Hidden in plain sight, this creepy sculpture watches from above.

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

This 11th century tower is said to be the oldest building in Oxford.

An obsolete, long-forgotten advertising character lingers on this Sainsbury’s balcony railings.

One of Oxford's greatest treasures likely belonged to the legendary King Alfred the Great.

Used as an example in one of the first dictionary entries for "museum" in 1706.

A monument to one of the most famous modernist Chinese poems and its poet.

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

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

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

Hundreds of huge, centuries-old horseshoes adorn the walls of this nontraditional 12th-century castle.

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

Students can borrow artwork from this gallery to display in their own residences.

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

An unusual artwork dedicated to a unique man that entertained people visiting Cambridge while raising money for charity.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

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

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.