Liechtenstein's royal family calls this medieval alpine castle home.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The final resting place of a poisoned lover whose death was at the center of one of Glasgow's most sensational murder trials.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A unique art installation located on what was once considered the widest railway bridge in the world.

Glasgow's memorial to the International Brigade volunteers from Great Britain who fought and died in the Spanish Civil War.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

A scattered trail of street art adds a pop of color to the city's stark structures.

A never-finished memorial to the heroes of the Napoleonic War has become "Scotland's Folly."

Designed to allow funerals to proceed over the River Dulnain.

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

The unexpected mascot of Shetland's capital.

Legend has it that a Dutch fisherman lost control of his Shetland pony and tumbled from this cliff.

The main feature of these gardens is a rarity in the northernmost part of Scotland: trees.

These sculptures common among indigenous populations in North America, celebrate Shetland's unique geology.

The most impressive of Basel's three remaining city gates.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

A surrealist timepiece by the artist of melting clocks.

This 400-year-old tree is actually an immigrant from North America.

One of the most easily accessible examples of the rare 1960s UFO houses.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.