Quite possibly the last cross all humans will ever see.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

The pieces in this sculpture garden are made from demolished buildings that were once landmarks of Motor City.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

The most loyal of little dogs, or a Victorian era publicity stunt?

A six-ton wedding present for the King of the Scots.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A line of blue paint marks the route of the inaugural parade.

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

The school tested mustard gas for the U.S. Army during World War I.

Washington's iconic carousel has a nice piece of Civil Rights history.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

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

Largest Roman Catholic church in North America.

The house where John Wilkes Booth conspired with his co-conspirators.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A historic neighborhood church is reborn as a psychedelic arts collective.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

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