The oldest and smallest cemetery in Paris is only open to the public twice a year.

The final resting place of the "father of special effects."

The historic Masonic Lodge in which the first-ever female Mason was initiated.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

Retribution for death of infamous mob boss Franie Yale was a case of mistaken identity.

Some of the best Persian food in New York comes from the front window of an unassuming pizza shop.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

The site where Joe Gallo kept his guns, pet lion, and launched an all out mob war in 1960s Brooklyn.

Where infamous mobster and leader of Murder Inc. Albert Anastasia made his home.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

One of the oldest Jewish cemeteries in the city, it is now overgrown with an urban forest.

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

A famous songsmith's custom piano, dubbed "High Society," is hidden just out of sight in one of New York's finest hotels.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

Records of the dead describe the myriad odd ways people used to die.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

Come for the pastrami, stay for the million-dollar art.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.