In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

The only castle in North America to ever house European sovereigns.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

History is on display in this hall, which has served as the seat of city government for centuries.

This museum houses two of Mexico's most impressive Aztec monoliths.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Dating back to the second century, vestiges of prehispanic mural paintings are found in this underground palace.

At the time of its completion, it was the tallest dam in the world.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

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

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

A contemporary fresco movement illustrates the region's rich history.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

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

A bizarre roadside attraction and the first instance of miniature golf in the world.

In a city crazy for seashells this museum educates and amazes visitors using the wonder of cast-off exoskeletons.

This kitsch eatery is chock-a-block with bric-a-brac.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

One person's lost luggage is another person's treasure.

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.