Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

The ancient latrines of the Greeks, in all their public glory.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

Ancient serpentine sacrifice holder that has stood the test of time.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

Beautiful public park off the beaten path and away from tourists.

This park feels like a lush little jungle full of wildlife nestled within São Paulo.

This singular art museum in São Paulo is unique inside and out.

More than 100 colorful residents stand post in this seaside Australian city.

One of the first big sculptures anywhere in Australia.

There's nothing shrimpy about the world's largest artificial prawn.

A special train service transported Sydney's dead from this station to "Necropolis Receiving Houses" at Rookwood Cemetery.

A massive metal lobster welcomes tourists to a roadside restaurant.

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

Popular tourist destination now stands as a memorial to Sam the koala.

This controversial museum includes such detested exhibits as a chocolate suicide bomber and fecal-smelling digestion machine.

Cockatoo Island is a Heritage-listed island in the middle of Sydney Harbour.

Come for the flowers, stay for the bats!

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

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

A clear example of the process of erosion in action.

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