A plaque at the lighthouse where Frederick Valentich made his last radio contact before he vanished without a trace.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

A clear example of the process of erosion in action.

Arcade chock-full of old timey, whimsical, hand-cranked automata and peepshows.

This green and white building is shaped like a massive Rubik's Cube.

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.

This historic observatory contains the world's oldest refracting lens telescope.

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

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

Also known as the Osaka Garden, this garden was originally built in 1893 as part of the World's Columbian Exposition.

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

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

An island on the Venetian Lagoon hosts this stone chair that has nothing to do with the King of the Huns.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

This hot dog-shaped diner has moved all around Colorado, but has never been to New York.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.