Scotland's only funicular railway is also the United Kingdom's highest.

The oldest inn in England served brew to the crusaders.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Three bridges straddle a stream, one stacked upon the other.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Surreal riveted sea forts once protected the Kent shores from German attack.

At high tide this strange footbridge appears to have no purpose whatsoever.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

A unique waterfall that some believe attracts the fairfolk.

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A student driver's nightmare.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

England's most famous front door has an accidental doppelganger.

The commemorative stone column conceals a secret laboratory.

These ornate arches show how the course of the River Thames has changed.

The fences outside some of South London's estates are made from recycled World War II stretchers.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

An architectural oddity hides in plain sight on this iconic London bridge.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.