A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

Feast on Middle Eastern mezze from an Israeli expat duo.

This third-generation institution is one of the last in London that still cures its own salt beef for epic sandwiches.

A marine aquarium with an astounding variety of fish hides in the basement beneath the famous Palm House.

Order a salt beef-loaded beigel at any hour of the day or night at this East End institution.

Heralded as the oldest statue in London.

One of the oldest remaining Catholic churches in England is home to the hand of a 7th-century saint.

King of the Saxons on top, Roman goddess of wisdom on the bottom.

Preserved behind glass, the ruins of a medieval building used to store human remains.

Built by George III to observe the transit of Venus, this Georgian gem is a unique survivor in the Arcadian landscape of Richmond upon Thames.

A discarded movie prop that was the original monolith for "2001: A Space Odyssey."

A mineral spring that became all the rage in 17th-century England.

Above an abandoned Underground station, this charming bookstore is home to strange antiquities and literary works.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

According to legend, this tomb holds the secrets to time travel.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

Legend has it that seven Anglo-Saxon kings were coronated on this stone, located in the appropriately-named town of Kingston.

A gallery specifically dedicated to the botanical illustrations of a remarkable traveling lady.

This educational institution and reference library specialize in the psychic arts and mediumship.