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

The best place for scenic views of the DMZ and North Korea.

South Korea's largely symbolic, barely used gateway to the North.

Secret North Korean passage discovered below the world's most dangerous border.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

A beautiful example of 18th-century engineering still standing tall.

The F1 Mexican Grand Prix circuit goes right through the middle of this old baseball stadium.

A fabulously bizarre surrealist sculpture by the late artist Leonora Carrington.

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

A gigantic, symbolic artwork covers the side of the building.

The conquistador's former fortress is the oldest preserved colonial building in the Americas.

Its incredible collections are dedicated to preserving Mexico's film history.

The underground mall's skylights look like they could be part of a spaceship.

The official Presidential Residence of Los Pinos became an emblem of Mexico's opulence and presidential corruption.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

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

CDMX's home for the world's culinary delights.

The ruins of an ancient temple to the Aztec wind god discovered in the middle of a metro station.