The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

6000-year-old coal fire moves one meter per year.

Thousands of used shoes create a unique public art exhibit along this old paddock fence.

This museum is home to one of the largest private collections of seashells in Australia.

A miniature cathedral made of 20,948 tiny pieces of marble.

The smallest country in Australia is a principled little thing with a friendly emperor.

A boardwalk winds through this sliver of coastal nature hidden within Sydney.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

A slice of central Asia in the middle of Berlin.

This hidden green space is the city's second largest conservatory.

Rebuilt remains of a temple to Roman god Mithras.

Public access to clean drinking water was an instant hit among the masses.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Ruins of a German Castle on top of a towering stone pillar.

Over 12,000 hygiene oriented objects and exhibits.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A museum honoring Germany’s cucumber mecca offers a great dill of gherkin history.

A 12th-century fortress containing some of Berlin's oldest buildings.

Started as a kitchen garden, now the second largest botanical garden in the world.

A wunderkammer of mysterious objects and stories.

Antique frame collection with 2,400 frames.