A layered tribute to the work of mosaicist Isaiah Zagar.

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

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

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

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

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A bizarre house filled with an astounding array of collections.