Half-hidden by grassy slopes, this striking Spanish colonial fort is now a museum of underwater archaeology.

In the middle of this historic colonial city resides a modernist government building known as the UFO.

The masses at this church incorporate enough moonshine and animal sacrifice that they are no longer recognizably Catholic.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

66,000 pieces of art, donated by one of the world's richest men.

A 16th-century monastery boasts a lush array of plants native to Mexico’s most biodiverse region.

Mexico's second-tallest monument, now half-hidden in a private residential complex.

The extremely grey columns of one of Mexico City's most iconic beltways are slowly gaining a bit of color.

This clock was gifted to Mexico as a show of gratitude for its long history of welcoming Arab migrants.

A small pack of an ancient, hairless breed of dog once believed to guide souls through the underworld lives on its grounds.

On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

Part bookstore, part café, and part forest.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

A legendary tree towers within its own vibrant sanctuary.

This mid-century mural portrays humankind's spiritual and scientific journey.

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

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

The most confusing clock in New York.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.