A series of waterfalls so massive they straddle the border of Argentina and Brazil.

A snake farm famous for its venemous varieties.

A huge boat-shaped hotel with a blood red pool and other oddities.

A labyrinthine museum chronicling the history of African culture in Brazil.

Half curiosity cabinet, half late night hotspot, this Brazilian bar is helping turn a dangerous neighborhood around.

An overlooked collection of over 350,000 artistic works created by psychiatric patients using art therapy.

Solitary monument dedicated to the beauty of nature.

This majestic building, where Brazil's coffee brokers once bought and sold beans, now houses a coffee museum.

A 125-meter long "tribute to the Brazilian people."

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

This Parisian café sticks almost exclusively to an ethos of reuse.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

An emerald-green grotto just a short trip from Austin.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Macabre astrological automaton clock dating to the late 1400s.

Stained glass windows bathe this botanical garden in cosmic light.

A 30-acre garden inspired by the principles of modern physics.

Extraordinary sculpture garden created by an eccentric English poet.

The sign at the garden gate reads: "These Plants Can Kill."

Singapore's landscaping project is home to 18 incredible Supertrees.

The massive gardens and office of a Brazilian sculptor.

Beautiful public park off the beaten path and away from tourists.

This historic, palatial theater is now one of the world’s most beautiful bookstores.