Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The history and future of cannabis.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

The "Seinfeld" diner.

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

These azure waters were thought to lead to the Mayan Underworld.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

A dilapidated dock tells the story of Titanic's missed arrival.

Home to the most complete dodo remains known - one head, and one foot.

Thousands of well-dressed mummies below a monastery.

The oldest inn in England served brew to the crusaders.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

Pop culture has helped to keep this iconic British building from being destroyed.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Historic medieval fortified city in southwest France.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.