The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.

Some believe this tree to be more than 1,500 years old.

This redwood is a historic landmark, a town’s namesake, and the dancing sideline symbol of Stanford University.

This massive redwood tree has stood in Northern California for nearly 2,000 years.

The longest living non-clonal organisms on Earth.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

A lush green oasis in the middle of Chicago.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

Two tombstones associated with the much-beloved children's story.

Several colorful mosaic panels depict the life and creative genius of the Master of Suspense.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

This network of roads is one of the most unique Etruscan creations ever discovered.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

Above an abandoned Underground station, this charming bookstore is home to strange antiquities and literary works.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."