This 16th-century mosque is the hallmark of the African architectural legacy in India.

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

Dictionary Johnson’s favorite feline.

This London plaque marks the spot where David Bowie's famous alien made his debut.

This hidden green space is the city's second largest conservatory.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

The middle finger of modernity.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

An artistic tribute to the famous singer, just around the corner from where he was born.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

The television series' iconic giant foot was borrowed from this classical painting.

Abstract dinosaur models in London.

A clock designed to run with perfect accuracy for 10,000 years.

Remnants of a Victorian garden feature sitting in public woodland.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

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

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Banksy gives themself artistic license with this piece of London street art.

Hidden beneath the streets of London is a secret subway that only carried mail.

The rocks in this arid basin leave trails of movement behind them.

Potential high level nuclear waste storage site for the next 10,000 years and beyond.