Tucked in the back of this amazing antique store is an important piece of medical history.

Macabre museum devoted to historical Viennese murders.

This former insane asylum now holds a pathological anatomy museum.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The beautiful baroque library of the Hapsburg empire.

A 140-year-old castle with underground caves hidden in San Francisco.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A winding path built in secret on the edge of the continent.

Museum dedicated to the terror regimes of Hungary.

Once the home of a hermetic monk, this cave now houses a small church.

A 19th-century artistocrat's mansion, turned into a library, hidden in a modern library.

The final resting place of New Orleans' most famous voodoo priestess.

Shop for books in the New Orleans house where William Faulkner once lived.

A house of courtship where the Jazz Age's most storied lovers got their start.

A treasure trove of rare and exquisitely detailed antiques

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

An old-timey wax exhibition campily depicting New Orleans legends and scandals.

The curiosities and wonders of pharmacy in a delightful historic building.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

The South's nickname was supposedly born at a former bank in New Orleans' French Quarter.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

The beautiful, fruit-covered facade hints at this building's former life.

The state's oldest continuously operating museum houses more than 5,000 Civil War artifacts.

If New Orleans is the birthplace of the "cocktail," why does their own museum of cocktail memorabilia beg to differ?