The largest of London's subterranean rivers and once a mad, bad center of London life.

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

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

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

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Italian cave with exceptional acoustics and an unsavory history.

The world's most active stratovolcano is almost always erupting.

A study of Fascist era Art Deco design in Italy.

An abandoned shopping gallery built during Fascist Italy tucked in the center of Palermo.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

These spartan apartments are provided to clergymen visiting Vatican City.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

Thousands of well-dressed mummies below a monastery.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

Every inch of this chapel is covered in craftsmanship from across the world.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

A sculpture serving as an homage to Pope John Paul II.

A hospital where antique dolls are given new life.

Breathtaking and huge 430 year old maps of Italy.

Architectural monsters are devouring this palace's every door and window.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.