This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

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.

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

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

A quirky and charming restaurant founded by artists.

Preserving the memory of the narrow railroads that once crisscrossed the state of Maine.

This stately clock was gifted from China's last imperial government to the people of Mexico.

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

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.

Frida Kahlo's childhood home, now a museum of her life and works.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

A haunting, yet lovingly hand-hewn potters' field full of graves that flood with each heavy rain.

This unique shop is full of memento mori art, antique medical equipment, secret society paraphernalia, and historical relics.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

One of the world’s largest collections of paper memorabilia chronicles 4,000 years of papermaking.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This shop for all your super spy needs hides an educational secret.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

After just one epic test blast, this literal loose cannon proved too explosive for combat.

An early-19th-century hotel with a past that is steeped in the Civil War.

An eerie smiling woman looms above the granite tombstones.