Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Millions of numbers carved in glass represent the tattoos forced upon victims.

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

One of the few remaining monuments dedicated to South Boston's Irish heritage.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

The world's largest piece of copyrighted artwork.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

Narrowest house in Boston.

Two thousand artifacts from around the world collected by one woman who loved to travel.

An enormous, inside-out glass globe built in 1935.

The first park built over a freeway is a brutalist masterwork.

A walk through the historic city center, under the streets of Seattle.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Visit the monolithic tomb of America's most famous general.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The "Seinfeld" diner.

Museum dedicated to awful artwork.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

One of 100 “Whaling Wall" murals painted in 13 different countries by a renowned marine life artist.