This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

This once-private estate is now a dreamy, meditative garden that's open to the public.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

The Victoria-era quarantine station for Sydney.

A sparkling sandstone cliffside that's worth a visit while it still exists.

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

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

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

This secret Australian garden was built on love after a man planted a random bulb he found in the ocean.

A bizarre stone beast lurks on the beach of a popular tourist island.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

A painted tribute to an ancient Egyptian king lurks along a stretch of Scottish shore.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

The eerie ruins of a remote abandoned hamlet said to be founded by the survivors of a shipwreck.

A quaint museum nestled in a former hub of Irish moss harvesting.

Its unique collection details the history of the state's svelte railroads.

The rusty hull of this 1899 ship serves as a tribute to explorers of the bottom of the world.

A display of hand-built replicas of the legendary vessels used by Patagonian and Antarctic explorers.

A single light illuminates one man's overshadowed contributions to street lamp history.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

A remains of a stone shelter are a reminder of "The Worst Journey in the World."

One of the most extreme deserts in the world, these snow-free valleys harbor life, despite the hostile environment.

Nimrod Polar Expedition base, and home to hundred-year-old frozen whisky.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.