This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This secluded walking trail is a hidden gem of a Pittsburgh park.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The largest collection of Indigenous Australian artifacts in the world, and the rare museum where wood-and-glass cabinets have trumped interactive exhibits.

An iconic work of public art that lights up the downtown area.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

A wealth of plants and horticultural curiosities fill this charmingly antique museum.

Dedicated to an "Unknown Man," this grave holds either the remains of a lovelorn suicide or a Cold War spy.

An island off the coast of South Australia is home to the last purebred Ligurian bees.

The sullen remains of vessels abandoned in the Port Adelaide River.

A controversial interactive sculpture that "weeps" water.

The colony of South Australia was proclaimed on a hot December day under a distinctively arched gum tree.

This salt lake in South Australia features seasonal color changes and its very own loch monster.

The evolution of a simple creek cutting its way through an ochre mountain side.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

A self-funded cemetery with a long list of inhabitants.

This work of art was designed to represent the Tarpeian Way Quarry that once dominated the area.

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

This letter written by Queen Elizabeth II in 1986 won't be opened until 2085.