Whether they’re associated with counter-culture movements or ancient rituals, the mind-altering drugs that hold the most significant places in human history and culture are usually plant-based. And a new living exhibition at Kew Gardens, the botanical gardens in London which boasts the world’s largest collection of living plants, allows visitors to view these drugs, “from everyday to class A,” in their natural state.

The drugs included run the gamut from caffeine to opium to the powerful psychoactive Ayahuasca. And so far, Kew say that they have received “overwhelmingly positive feedback” from visitors. Presumably, the scientific context of this display smooths over any legal hurdles.

Curator Justine Quinn says, “People often know about the drugs coming from them, not the plants themselves,” and notes that “Most of us will take a mind-altering plant at some point.” Here are some of the exhibition’s highlights:

Amania Muscaria (“Magic Mushrooms”) via Substance.com

Areca Nut (mild stimulant) via Substance.com

Ayahuasca (psychoactive) via Substance.com

Blue Agave (tequila ingredient) via Substance.com

Coffee via Substance.com

Datura Stramonium (powerful hallucinogen) via Substance.com

Kava (powerful sedative) via Substance.com

Khat (stimulant) via Substance.com

Cannabis via Substance.com

Opium poppy via Substance.com

Peyote (mescaline) via Substance.com