Eight feet in diameter and more than 24 feet around.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

This memorial was created by an Irish nurse who lived in New York City during 9/11.

An abandoned quarry hides an open-air gallery of huge sculptures, some made from the rubble of 9/11.

The above-ground crypts at this Catholic cemetery face north-south instead of the usual east-west.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

The nearly 200-year-old building displays a perplexing grammatical error.

A measuring mishap led to these artificial stone ladies losing their stomachs.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

A fake mine that was made using real mining techniques which is also used as a community center.

The legend of a local monster still haunts this small town.

This historic electric train has operated with regularity since the early 1900s.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

The Bong-area park police have asked visitors to please, stop stealing the signs.

An abandoned church gets a second life as a massive beer hall and event space.

An extensive collection of ancient Egyptian artifacts and mummies.

A relic from a forgotten bakery chain still spins atop a diner.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

4,000 monkeys used for medical testing on an island off of South Carolina.

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

A breathtaking 19th-century trail overlooks Lake Tahoe.

The longest non-mortared wall in the country is one man's tribute to his displaced Yuchi ancestor's five-year journey to her homeland.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.