Medieval irrigation channels built into the sides of mountains provided Valais with water for hundreds of years.

Museum of science fiction, utopias, and extraordinary journeys of the mind.

A 22-million-year-old sandstone cave is a natural habitat for award-winning cheese.

A mythically themed self-built sculpture park.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

Vines grow up the metal bars in this public park created from an old machine factory.

For centuries no one knew there were hundreds of bones and precious artwork hidden beneath this Swiss church.

Enormous, fluffy dogs frolic around this museum dedicated to a legendary Saint Bernard.

The steepest classic funicular in the world glides along a dizzying incline.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

These spooky and unusual stone formations create an underworldly landscape.

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

The first park built over a freeway is a brutalist masterwork.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

A colorful architectural gem in Seattle's uniquely modern Central Library.

A house filled to the brim with oddities and curiosities.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.