Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

Abandoned concert venue legendary for its rock counterculture.

Detroit’s downtown castle is one of the oldest structures in the city.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

World Trade Center memorial likened to a woman's sexual organ.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

The largest known Ancient Egyptian obelisk.

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

This small Irish village suffered the greatest loss of life when the Titanic sank.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Townhouse facade doubles as an RMS Titanic Memorial.

Amsterdam's Red Light District leaves little to the imagination.

Cryptid lake monster honored with its own monument.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The miraculous hydrant that saved the Mission District in 1906.

A remote crossroads honoring a fallen talent.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

It's not a typo, now say it five times fast!

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.