This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A semi-scholarly approach to sex.

There must be a pun in this haystack somewhere...

Cryptic messages embedded in the New York City sidewalk.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This elaborate towering structure was once famed for its revolutionary height.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

Yo, Adrian!

Dr Barnes' $25 billion private collection of art and arboretum.

City Council meetings still happen in this historic building, impeccably preserved on the inside.

While these wooden totems bear a striking resemblance to First Nations artwork of British Columbia, their actual origins lay on the opposite side of the Pacific Ocean.

The oldest building in Vancouver's Chinatown is now home to one of Canada’s largest contemporary art collections.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

This former coal gasification plant found a curious second life as a popular public park.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

A wall of chewing gum moonlights as collective art.

This working class sculpture pounds his hammer all the livelong day.

A colorful architectural gem in Seattle’s uniquely modern Central Library.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

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

A piece of Seattle’s historic Chinatown preserved inside a modern museum.

A Boeing mechanic and his wife leave a whimsical, stone sculptured garden as their legacy.