This Orthodox Church's exterior is rather unorthodox.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A celebration of capitalism in Midtown.

A dilapidated dock tells the story of Titanic's missed arrival.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Thousands of well-dressed mummies below a monastery.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A museum now occupies the mansion in Samoa where the prolific Scottish writer chose to spend the last years of his life.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Paths are maintained, but trees have taken over plots.

Final resting place of Typhoid Mary.

The final resting place of soldiers' loyal canine companions.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The home of aviation trailblazers, in a remote corner of the big city.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.