Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

One of Oxford's greatest treasures likely belonged to England's legendary King Alfred the Great.

The beams of the New College, Oxford dining hall come with an amazing story.

This 11th century tower is said to be the oldest building in Oxford.

Hidden in plain sight, this creepy sculpture watches from above.

Oxford University's stateliest library seems designed to make students truly feel the weight of knowledge.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

One of Europe's oldest libraries.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This tiny home was originally a narrow alleyway.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

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