The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A larger-than-life house of cards stands outside the house of a former fashion designer.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

This hotel was the site of major events in sports and radio history. It was also used as a detention center during World War II.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

This historic patch of real estate offers a glimpse of colonial Boston.

No one messes with the Massachusetts sacred cod, not this time...

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

These whimsical works of art tell the story of the city's past and present.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Ice cream stand, snack bar, and time capsule of milk conveyance.

Beautiful steampunk ghosts of early Massachusetts.

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

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

An ear-piercing buzzer calls lawmakers to a vote with a series of long and short rings to form coded messages.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.