The bones of this aquatic dinosaur turned to opal over the centuries and the beast's remains were almost sold as jewelry.

A series of gun powder chambers currently hidden from view within Nobbys Headland in Newcastle, Australia.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

After much poking and prodding, this island is decidedly not a magnetic anomaly, but it sure is pretty.

Kakadu National Park is known for its stunning beauty and its rock art, which represents the longest historical records of any continuous civilization on Earth.

Ships still use this historic lighthouse to navigate dangerous, island waters.

This water wheel turned to stone in a matter of decades.

Visible from both land and sea.

Pilgrimage site for star-crossed lovers.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

The largest known Ancient Egyptian obelisk.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

This subterranean funicular is one of the world's smallest subways.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The home of the Dead Sea Scrolls is an abstract modernist dream.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

Christ's blood allegedly preserved in a Belgian town.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

This museum covers 10,000 years of Pre-Columbian Latin American history.

You have to know where to look in this rather ordinary-looking square to find hints of its past as a dissidents' cemetery.

A whimsical bridge adorned with decorative dragons.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.