These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

The Neolithic megalith was one of the first archaeological ruins protected by the British government.

A measuring mishap led to these artificial stone ladies losing their stomachs.

The Mexican painter Diego Rivera created this unusual museum to display his collection of pre-Hispanic artifacts.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

A little slice of Japan and its aesthetics in London's Holland Park.

This magnificent tree towering over the Atlantic rainforest is one of the oldest and largest in Brazil.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

These nearly 500-year-old scenes are largely faded by the ravages of time, yet still maintain their power to horrify.

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

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Where layer cakes tower above one’s head and there is never a shortage of icing.

An ornate aviary built during the Victorian trend of collecting exotic birds.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

In the Manduri reserve of Sao Paulo, you can see the endangered black-horned capuchin monkey up close.

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

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

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The singular ruins of a mysterious lost city.

This prehistoric figurine is the oldest known realistic depiction of a human face.