This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

The ruins of a pre-Columbian fortress city so secure it held off the Spanish conquistadors for over 20 years.

This abandoned factory on the Hudson River once churned out a million bricks a week.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

A tribute to the 20th-century ball that cast a spotlight on Mexico’s LGBTQ community.

A series of abstract sculptures pop up from an otherworldly volcanic landscape.

A barbarous band of serpents guard the bases of these Aztec temples.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

A quirky and charming restaurant founded by artists.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

The burial place of some of Mexico's most prominent residents is full of macabre stories and hidden masonic symbols.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

Twelve natural mummies are displayed in the crypt of this former monastery school.

A church dedicated to the Mexican skeleton saint.

Peaceful gardens hide an underground torture museum.

Continuing the tradition of the dime museum in style.

A small island hides in plain sight on Austin's Lady Bird Lake.

To honor a beloved Austin radio DJ a neighborhood bridge has been covered in a loving mosaic.

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

This communist country can still appreciate its fragrant past.