Xul Solar was an artist of alternate worlds, inventor of languages, and dreamer of utopias.

The largest collection of hair jewelry in Europe reminds you how creepy 19th-century love was.

Natural time capsule containing an alien ecosystem.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

Peek through a transparent pyramid and drink in the mountain made of books.

Sculpture that doubles as a time capsule so that life can survive radiation outside Chernobyl.

Offbeat arts organization that hosts exhibitions, events, and explorations.

A large instrument played by the wind.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

Free candle-lit art gallery, accompanied by a live piano score.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

A unusual sanctuary for abused and exotic animals in South Jersey.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Risk arrest while partying to fund art.

The famous author's cottage hideaway.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

Prove you deserve to be fed by Kenny Shopsin.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Skewer up Kangaroo.