This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

This historic hotel invented the chocolate brownie.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

The subtle science of a master molecular gastronomist.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

An enormous park-like oasis, full of famous Chicagoans' graves.

An antiquated German apothecary on Chicago's North Side.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A speakeasy takes on Chicago's drinking culture.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This shop for all your super spy needs hides an educational secret.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

A plaque marking the famous abolitionist's birthplace often overlooked by visitors to the nearby Charles Sumner House.

A centuries-old church stands as a testament to Boston's "father of architecture."

Located in Faneuil Hall, the headquarters of the Ancient and Honorable Artillery Company of Massachusetts has stood the test of time.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

A real plaque marks the spot where a Faulknerian character committed fictional suicide.

The infamous Boston Mob ran rackets from an office here in the 1970s.

This funeral home had the honor, if that is the correct word, of hosting the funeral of the famous Sacco and Vanzetti.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

This small glass cube is a peaceful out-of-the-way sanctuary at the busy airport.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.