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

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

Rebuilt remains of a temple to Roman god Mithras.

This operational mill has survived centuries of destruction and construction.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

An unusual round church in London with a Templar past.

Dictionary Johnson’s favorite feline.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

Nancy Thompson's Home from "A Nightmare on Elm Street."

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

The Florence Nightingale Museum is home to the famous nurse's most treasured possession: her beloved pet owl.

Flying high, this unusual hornet statue celebrates the local soccer team formerly owned by Elton John.

Chemical fertilizer in agriculture's origin story begins here.

Hear the quietest sound from across the dome.

Once the largest unsupported dome in the world, beating out the Pantheon and St Peters in Rome.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

One of the world's largest collections of pathological specimens.

An incarceration museum on the spot of possibly the oldest prison in England.

A kaleidoscopic warehouse-maze of handmade neon signs.

Repository for more than 22 million pickled specimens.