A line number in Amsterdam that will likely never be used again due to its tragic history.

A beautifully eclectic mix of architectural styles.

A curious collection dedicated to human and animal anatomy and pathology.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A moving memorial to the fallen and missing from WWI trenches.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

The final resting place of soldiers' loyal canine companions.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.