A rare view of a preserved Victorian science museum.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

World's first "penitentiary," meant to be humane, drove men insane.

Dr Barnes' $25 billion private collection of art and arboretum.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

The first American department store, and home to the largest operating musical instrument in the world.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This elaborate towering structure was once famed for its revolutionary height.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

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

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

London's most popular recording studio, located in the capital's East End, runs partly on solar power and has played host to some of the world's biggest acts.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

A roadside shrine to a late rock god only remains thanks to the unyielding efforts of his fans.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

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

The cedar tree in Highgate Cemetery earned its title by accident.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

London's largest outsider art museum.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.