A 300-foot-long Cold War submarine floats in a Chilean River as a maritime museum.

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

An incredible little museum of interior design full of artifacts collected from around the world.

Monumental paintings, discovered in a Mexican cathedral in 1957, depict the deaths of some friars in Japan.

The former headquarters of a leader in the Mexican Revolution, and the site of an often-reproduced image.

This exquisite example of early colonial architecture remains unfinished almost 500 years after construction began.

It makes sense that this airport, serving one of Mexico's most artistic cities, also doubles as a gallery.

This graveyard boasts a medley of diverse and imaginative funeral architecture.

The ruins of an abandoned church mingle with the graves at Oaxaca’s General Cemetery.

These crypt figures are said to be the giant and his family, turned to stone mid-rampage

These ancient rune stones plucked from the countryside now call this university park home.

A concrete mushroom that divided Stockholm residents for nearly a century.

Ancient stone graves shaped like ships provided a Viking-like burial to carry the dead to the afterlife.

Swedish skyscraper with a 90° twist.

Sweden's oldest animated sign is still lighting up the skyline today.

Sweden's oldest street has not changed for nearly a millennium.

Visit the home of Sweden's beloved fictional character, Pippi Longstocking.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This amazing collection includes rare stamps from around the world, including fluorescent ones.

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

Home to an astounding collection of carved skulls and other artifacts from Puebla's history

This mosaic made out of books represents one of Colonial Mexico's most important literary figures.

An indigenous take on European design creates a stunning visual overload.