This sculpture, residing in a quiet corner of a London park, honors the victims of 9/11.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

Tucked inside a South Bank bar is an epic expressionist chronicle of the 20th century.

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

Built by George III to observe the transit of Venus, this Georgian gem is a unique survivor in the Arcadian landscape of Richmond upon Thames.

This striking statue brings a scene from the African savannah into central London.

A discarded movie prop that was the original monolith for "2001: A Space Odyssey."

The remains of a historic football stadium that once hosted 50,000 spectators.

The final resting place of a German diplomat's beloved companion.

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

This life-size monument honors the legacy of a famous literary feline.

A sculpture of a famous ape who was once a beloved household name in London.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

The medieval woodcut-style artwork chronicles life in medieval London.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

William Smith's iconic "map that changed the world" is hidden behind a curtain in the Geological Society building.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

According to legend, this tomb holds the secrets to time travel.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

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