Speculum Alchemiae
History museum · Josefov ·

Speculum Alchemiae

History museum · Josefov ·

Secret door leads to underground lab with medieval science exhibits

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Speculum Alchemiae by luschippa (Atlas Obscura User)
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Speculum Alchemiae by ahvenas (Atlas Obscura User)
Speculum Alchemiae by Horakvlado/CC BY-SA 4.0
Speculum Alchemiae by ahvenas (Atlas Obscura User)
Speculum Alchemiae by reley250 (Atlas Obscura User)
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null
Speculum Alchemiae by null

Information

Haštalská 1, 110 00 Staré Město, Czechia Get directions

Information

Static Map

Haštalská 1, 110 00 Staré Město, Czechia Get directions

+420 773 645 234
alchemiae.cz
@speculumalchemiae
𝕏
@alchemiaeprague

Features

restroom
wheelchair accessible parking lot
wheelchair accessible entrance

Last updated

Nov 23, 2025

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@cntraveler
40,944 Postcards · 5,496 Cities

Where in Heaven and Hell and Eastern Europe Was Nosferatu Filmed?

"A museum about alchemy in Prague that inspired the apartment design of the character Albin Eberhart Von Franz in Nosferatu."

https://www.cntraveler.com/story/where-was-nosferatu-filmed
Speculum Alchemiae
@atlasobscura
4,908 Postcards · 2,018 Cities

9 Places to Experience the Wonder of Alchemy

"Hidden in the historical center of Prague you will find a ground floor studio sporting portraits, books, and assorted curiosities. The hide of the last black bear to be hunted in the outskirts of Prague lies on the floor. The real treasure is yet to come.  Locate the small statue in the library and give it a twist. A secret door will open down onto a narrow set of stairs, which leads to an underground laboratory sprawling beneath. This underground space, re-discovered after the massive flood of 2002, contains the equipment and the crucible used (supposedly) to turn lead into gold. A mummified crocodile hangs from the ceiling: the alchemists used to refer to it as a “dragon” to inspire awe in their visitors.  While the museum is a re-creation, a bit gimmicky, and the trip through the secret door down into the basement is done with a tour guide it is nonetheless an unusual journey into Prague’s occult history.  This was the place where experiments were conducted, hidden from the eyes of the inquisition: for good measure, a tunnel (the beginning of which is shown during the guided visit) led directly from the laboratory to a safe escape in the woods out of the city… alchemists can never be too careful." - ATLAS_OBSCURA

https://www.atlasobscura.com/lists/alchemy-places-europe
ahvenas (Atlas Obscura User)
Speculum Alchemiae

Luisa Sofia F.

Google
This was super interesting as we got to see hidden tunnels and rooms where alchemy was made. They even show us an original elixir that was found there in the old ages. All the visits are guided and the lady that did our tour was friendly and informative. I did the tour at 14h and we were only four in total which was great! If you are interested in these themes I highly recommend doing this tour.

George F.

Google
The tour was fascinating and full of interesting stories. Albeit small, I think it’s worth the visit. The staff is very passionate and engaging. Make sure you have cash on hand to pay for the tour.

Maria H.

Google
Small but very nice museum. The tour is well organised and informative, the rooms have a lot of original details and decorated nicely to express the atmosphere. It gets tight when the tour group is large but everyone gets enough time to explore all the rooms. Would absolutely recommend.

Andy H

Google
Brilliant little tour of about 30 mins . Guide we had was born into that job! She spoke about every room gave you chance to have a look and then a free roam after she had finished. All very interesting.

Abdulaziz

Google
Absolutely amazing tour! The highlight was definitely our instructor—she was incredibly knowledgeable and passionate, giving us a full and engaging overview of the site’s deep history and its UNESCO significance. One of the coolest parts is a hidden door that she guides you through—super fun and mysterious! A heads-up: they only accept cash, and the entrance is 10 euros per person, so make sure to have cash on hand before you arrive. Totally worth it for the experience!

Áron G.

Google
Mísa gave us an amazing guidance through the underground lab and the history behind it. The place itself is not that big, so the tour was only half an hour, but We could learn a lot and see some cool and hidden gems. Definetly recommend, went with family at later hours so it was not crowded either

LemLem O.

Google
The alchemy tour was quite cute! It wasn’t easy to figure out what was real and what was a modern prop as they mixed original objects with fake ones quite a bit, but the tour guide was able to point it out easily. Would have been more fun if they let everyone try a shot glass of an elixir at the end of the tour.

Eleni R.

Google
Very beautiful place to visit. The personel was amazing, kind and knowledgeable. The visit is guided and lasts half an hour. The tour starts every 30 minutes. Be careful cause it's a cash only place! Overall, it was a beautiful experience!
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Brian L.

Yelp
A short tour but one worth taking if you're into this kind of stuff. I came in somewhat on a whim, just before the start of a new tour. There were four of us, which seemed appropriate for the size of the spaces. Our tour guide was new, but she did a fantastic job nonetheless with giving us cool facts and details about the space. There are lots of cool objects and items. Some authentic, some rebuilt, some just for show. You have to guess which is which before the sand in the hourglass empties or everyone dies. There's even a shop where you can purchase versions of the opium-laden potions of the past. Too bad they're not the same. PS, everyone in our group was wearing all black. It's that kind of place ;)
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Patience S.

Yelp
The Speculum Alchemiae (Museum of Alchemy) was informative and fun. Floods opened up a basement in which alchemical texts and equipment. Recreated with love, this alchemy lab is a blast and the guide was as delightful as one could imagine. My companion, a Prague native, had never heard of the place but found it entertaining, while I nd my other companion found it charming. It's maybe not everyone's cup of tea. but if alchemy (the historical origins of chemistry) appeal, then this is a fantastic couple of hours worth of fun.
google avatar

Jan S.

Yelp
WOW! Amazingly great old survivor of hundreds of years of oppression. It was re-discovered recently and bought by a wealthy keeper of antiquities. Well worth the effort to go and learn what real Alchemy hundreds of years ago was about. Very sweet and helpful front desk staff and tour guides. Buy an old style bottle of some of their potions, from the original hundreds of years old recipe! Mine worked.