The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This poignant display is now a memorial to these regionally extinct species.

This morbid scene depicts the Darwinian drama of death on the African savannah.

A controversial magical figure is hidden within a diorama of the city.

This impressive scene portrays the elusive forest giraffe of Central Africa.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

Here be dragons.

Cryptic messages embedded in the New York City sidewalk.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A vaudeville performer mounted this hollowed-out redwood log onto the chassis of a truck, and toured the country spreading a message of conservation.

A Looff creation in Santa Monica best described as “a California-Byzantine-Moorish-style fantasy.”

At 130 years old and 126 feet tall, it is the largest known example of the rare Torrey pine tree.

One of the first skyscrapers in Santa Monica, and a famous getaway for the Hollywood elite of then and now.

San Francisco's first World's Fair, dedicated to the wonders of California.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A vast city of the dead, where the deceased outnumber the living by more than a million.