The site of the first battle of World War II.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

An underground city of salt.

In her ancestral home, one chef preserves ancient Filipino recipes and serves up traditional, home-cooked food to history-loving foodies.

The oldest remaining theatre in New South Wales.

The spherical grains of white quartz sand give every step on this Australian beach a distinctive sound.

The tallest mountain in mainland Australia.

A taste of Egypt on the outskirts of Geelong.

These 400 million-year-old caves feature honeycomb limestone formations.

This large lake in Central Australia contains an estimated 600 million tons of salt.

For nearly 50 years this airplane that crashed during World War II remained missing in the remote Australian backcountry.

A conservation sanctuary for rescued koalas, some of which were saved from devastating Australian bushfires.

This 19th-century convent is now a flourishing 21st-century hub for art.

A unique rock formation that only a few have managed to venture inside.

A spectacular impact crater in the rugged heart of Central Australia.

Victoria's largest salt lake is a favorite haunt for photographers and stargazers.

A massive concentration of algae is responsible for this lake's pink hue.

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

A perfectly preserved abandoned criminal asylum in South Australia.

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

The once-dying town of Sheffield, Tasmania has reinvented itself as a village of painted wonders.

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

Not a single witness can attest to the creation of the world's largest geoglyph.

Incredible rock formations jut from the southern end of this spectacular stingray-viewing spot.