The medieval castle built as headquarters for the Pope's secretive Knights Templar.

Picturesque intersection of witchcraft and ancient Christianity.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

A chunk of the "true cross" is held in this small Portuguese church where modern day exorcisms are said to be common place.

This castle has links to Portugal’s founding and struggles for independence.

A micronation on an islet along the coast of a Portuguese island.

Dead weights honor the dead of Portugal's fishing industry.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

This living labyrinth made entirely of thorns is filled with art.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

This tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

World War II bunker still standing on the New Jersey beach.

The ruins of the first Spanish settlement in Puerto Rico.

This small fort played a huge role defending Puerto Rico’s capital city.

This giant bronze image of Christopher Columbus embarked on a voyage of its own.

This former sugarcane transport tunnel is now a portal to a lovely beach.

The world's second largest single-dish radio telescope, once used to contact E.T.