This magnificent Cincinnati graveyard is also a popular public park.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

When it comes to handsignals (and colonialism) rock always beats scissors.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

The site of the climactic scene from the classic horror film is now a historic landmark.

Before Nixon, "watergate" meant canals.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The most accurate timepiece in the world.

This forgotten boat elevator was an engineering marvel in its heyday.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The United States Capitol's former columns still stand.

Decades before the scandal, this staircase on the river was a literal "water gate."

The oldest continuously operating fish market in the United States.