This Irish museum in a historic 19th century market pays tribute to the glory of butter.

A 20-meter (65-foot) robot towers over Tokyo Bay.

This is one really big nut.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

Steadily reminding Czechia of its past.

A hidden world of exotic succulents and cacti.

Looming communist pillar with a Czech twist.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Hundreds of trees made from glass bottles make up this forest on Route 66.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

The original "capsule building" is a masterpiece of Metabolist architecture.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

The ghost town that ended up on Ebay.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.