The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

Its columns were all carved from the same white oak tree.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A historic Montreal market that was the city's agricultural hub for over century.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A surrealist timepiece by the artist of melting clocks.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This 400-year-old tree is actually an immigrant from North America.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The narrowest street in Paris.

The site where two doves fell in love.

This demon atop the Notre-Dame de Paris looks utterly bored.

Enormous statue of the Emperor of the Mongols.

Dinosaur eggs were first discovered at these fiery red cliffs.

The oldest Buddhist monastery in Mongolia has survived centuries of invasions, political shifts, and religious purges.

A mysterious phallic rock on the grounds of a Buddhist monastery.

People have been scribbling on this massive chunk of granite for more than 1,500 years.

A jagged silhouette of shamanistic stone heaps rises from the shore of this dazzling mile-high lake.

Established hundreds of years ago, Gandan remains the premier Buddhist monastery in Ulaanbaatar.

A beloved tribute to the Fab Four and the freedoms they inspired.

Ancient site of Mongolian Shamanism located near a road leading out of Ulaanbaatar.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.