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

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

An extravagant 18th-century fountain built with bits of broken ceramic.

Outside a market, beautiful murals pay tribute to fruit sellers and farmers, as well as a few legendary artists.

This piece of a Renaissance-era Spanish castle remained lost for decades.

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

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

Located in a veterinary school, this macabre exhibit displays the effects of animal diseases.

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

A museum in the former home of Marxist revolutionary Leon Trotsky.

Inside the cloister of the Temple of San Juan Bautista is a ceiling decorated with gold Baroque illustrations.

Abandoned figurines adorn a small plot on the side of a craft market's entrance.

Julia Buccola Petta's body was peculiarly well-preserved when it was exhumed six years after her death.

The oldest house in Chicago certainly doesn't look the part and there are some who say it doesn't deserve its title either.

The face of a woman pushes its way through the earth.

A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

Endless rows of boxes of paper records line the hallways of the archaic federal facility where guns are traced.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

A Perpetually Under construction Park.

When flour explodes, it's not a pretty sight.

This lab's maddening silence is good for business but bad for sanity.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.