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The tree is thought to be the oldest oak in Texas and was once crowned state champion for its monumental size.

Local legend says the remains of Father Christmas lie within the medieval grounds.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

One of the shortest streets in York has an especially odd name.

A fantastic castle rumored to be the birthplace of King Arthur.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

Famously misunderstood wonder of the ancient world

A headstone notes where the most famous of Robin Hood's legendary Merry Men is reportedly buried.

The alleged birthplace of Lady Jane Grey, who was executed at age 16 for claiming the throne of England.

The main gates have been locked since 1745 and will remain so until the Stuart Dynasty returns to the throne.

This Scottish manor house is a lush relic from the life of a literary great.

The writing studio of an American adventure author, built in the style of a medieval castle.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

Public access to clean drinking water was an instant hit among the masses.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Rebuilt remains of a temple to Roman god Mithras.

An incarceration museum on the spot of possibly the oldest prison in England.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

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

A famous burial ground with a history both grim and literary.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

Two plaques commemorate the site of Shakespeare's first theatre.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A slightly surreal menagerie of structures that were lovingly spared from demolition and reconstructed in a field.

Built by the patron saint of illusionists this Elizabethan manor house is riddled with secret cubbies for hiding priests.

A plaque marks the underground site of one of London's "lost rivers."

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The old tradition of drying laundry on poles in the public green is still guaranteed by Glasgow city law.

Though they've since been renamed, these two streets hint at Dublin's darker days.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

One of Ireland's most infamous prisons for rebels including men, women and children.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

The ancient tomb acts as a calendar that keeps perfect time.