A grove of "candelabra redwoods" deep in California's Lost Coast.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

Considered by many to be one of the most dangerous highways in Alaska.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

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

The longest living non-clonal organisms on Earth.

This giant 200-year-old ginkgo is one of the largest in the United States.

A subtle memorial marks where a human chain protested Soviet control in 1989.

An Oklahoma museum that celebrates the history of the "Mother Road."

Built in the 19th century, this bucket has been to two World’s Fairs.

Now containing the bones of the actual conquistador, instead of someone else.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

These pretty kitties killed and ate as many as 135 railway workers.

This simple, broken column marks the final resting place of one of America's most famous explorers.

The first declared National Monument in the United States.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

The final resting place of the great navigator, or maybe his brother.

Indiana’s oldest brick building was home to America's shortest-serving president.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

This colonial cabin is the oldest building in High Point, built by one of the first settlers in the area.

See the home and the range on which "Home on the Range" was arranged.