Mysterious 500-year-old tapestries depict a unicorn hunt.

Elevated freight railway turned wildly successful urban park.

Giant topiary dog once played a role in a terrorist bomb plot.

A garden in Lisbon filled with giant porcelain creatures.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This little-known national museum houses over 40,000 works of art from across the world.

Little-known artist couple chose a former silk factory as the location for a museum dedicated to their work and other avant-garde art.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

This 18th-century sundial was designed to calculate the date of Easter each year.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

Also known as “Robin Hood’s tree,” it became a famed location along Hadrian's Wall before it was cut down.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.