The last four extravagant street signs of London's historic banking street.

The "Heroine of Dunkirk" rescued over 7,000 Allied troops during the historic World War II evacuation.

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

Carved initials which are nearly 500 years old preserve the deposed Queen's presence at Hampton Court Palace.

The remains of the concrete ship can be seen during low tide.

"The Donut" was built as part of an expensive, ill-fated engineering endeavor.

The unusual clock on this 18th-century market building has an extra minute hand for "Bristol time."

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A real-life Professor Snape once taught in this Welsh university building, which students of course nicknamed “Hogwarts.”

A disastrous D-Day rehearsal was relatively unknown until this sunken tank was discovered 40 years later.

This little-known hero has been protecting "The Fens" for close to 400 years, and now from its most powerful challenger yet: climate change.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

The London statue that imitates passersby.

Enormous terracotta heads of Queen Elizabeth and Prince Phillip can be seen on the side of the road to Windsor.

London's amazing modernist public square that never was.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

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

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.