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

A mysterious suspended hand greets unsuspecting visitors at the Tower of London.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A memorial for public executions that dates back to the 14th century.

This one has sailed five times as far as Sir Francis Drake's famous ship.

An agreement meant to honor the Duke of Buckingham led to this unusually-named passageway near Charing Cross.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

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

One of Europe's oldest libraries.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

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

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

This tiny museum's sizable collection is jammed into a former underground public toilet.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

This stunning concert hall has become a symbol of Iceland's national recovery.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An unusual building on a "desolate hill" features the works of an Icelandic sculptor.

Born from segregation and exclusion, Durham’s Black Wall Street is now a living reminder of the city’s past

The embalmed remains of the communist leader lie within a custom crystal coffin.

A temple complex has existed on this site since the third century.