This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A 18th century graveyard and its astonishing cortege of macabre iconography.

It's believed emperor Hadrian himself funded this once architectural wonder.

These "bridges" help confused bats cross the road.

A 16th-century artillery fort built to protect England against European invasion.

400-year-old garden, restored to beauty.

These seaside shelters once enjoyed by royalty remain a part of local history.

Regency-era excess on the English Coast.

A grand Wetherspoon pub set in a former opera house dating back to 1902.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

An ancient water supply dating back almost 500 years can still be found standing in East Sussex.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

This hydraulic power system in London was, at one time, seen as a rival to electricity and the last of its kind to shut down.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

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

A quiet memorial to those who died saving others in the heart of the City of London.

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

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

Ship-sized kinetic sculptural fantasy.

This third-generation institution is one of the last in London that still cures its own salt beef for epic sandwiches.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."