An enormous, inside-out glass globe built in 1935.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

This impressive chasm is one of the longest natural underground cavities in the world.

The beautiful bas-relief lines a sliver of a 19th-century walking path between two charming French villages.

A hidden bas-relief of a hare on a church main portal that brings good luck to the ones who find it.

The oldest church in Mantua was buried for centuries under the facades of other structures.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

In Lago Superiore, the largest expanse of lotus flowers outside of Asia is hard to miss.

This decoration above a door, an unofficial family crest, is said to come alive during the night to try to get free of the stone.

Each spring this woodland floor is carpeted with purplish flowers as far as the eye can see.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

Inspired by Thomas Stothard's painting of the "Journey to Canterbury," albeit with Canterbury natives.

A stunning Art Nouveau cinema in the heart of Budapest.

On a small Slovenian island, diners can mix and match a classic cake into dozens of sweet and savory flavor combinations.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

A mocking tribute to the past and modern leadership of Prague.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

This extraordinary art museum is like a secret world on the edge of Mexico City.

Drink the 'Blood of Christ' in this Roman Catholic fever dream.

The footprint of a frustrated devil in Munich's Cathedral.