Historical figures from New York City's Catholic community reside in Midtown.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

The tiny church offers succor to travelers driving by, but only eight at a time.

New York's oldest and possibly grandest keeper of books.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

An exquisite Baroque church in Vienna's old town.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

The resting place for anonymous victims of the Danube's dark waters.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Macabre museum devoted to historical Viennese murders.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

This former insane asylum now holds a pathological anatomy museum.

The final resting place for the remains of 143 Habsburg royalty.

The beautiful baroque library of the Hapsburg empire.

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

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The world's oldest known salt mine.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.