The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

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

The towering figures were created from the cemetery's fallen old-growth trees.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

Go take a picture with the inventor of the daguerreotype photographic process.

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

There’s a hidden military meme engraved on the World War II Memorial.

This seaworthy collection was sparked by one man's passion for sailing.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

A park filled with vibrant mosaics created by more than 300 folk artists.

One man's homage to the orange as realized through a long-term folk art labor of love.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

A reminder to choose water over wine since 1888.

The first piece of public art dedicated to LGBT rights.

New York City's only radical feminist independent bookstore.

A memorial marks the library lobby where Langston Hughes' ashes are buried.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.