Speculum Alchemiae

If you’re searching for something truly unique and atmospheric in Prague, Speculum Alchemiae Museum is an absolute must‑visit. Tucked away in one of the oldest houses on Haštalská Street in the heart of the Old Town, this museum combines history, mystery, and immersive storytelling in a way that few other attractions do. From the outside, the museum might seem modest and unassuming, but once you step inside, you’re transported into the world of 16th‑century alchemy — a place where science, mysticism, and the pursuit of the impossible coexisted. The journey begins in a small but fascinating space filled with displays of replicas and original‑style alchemical tools, mysterious elixirs, scrolls, glassware, and period‑inspired artifacts that set the tone for what’s to come. What truly sets Speculum Alchemiae apart is its underground labyrinth of chambers and tunnels — the actual spaces where alchemists once worked under the patronage of Emperor Rudolf II. These rooms were rediscovered after floods in 2002 revealed forgotten corridors beneath Prague’s historic streets. Walking down into those cool, dimly lit passages feels like stepping into a secret forgotten chapter of Prague’s history. The tour is guided and highly informative, usually running in English and other languages at regular intervals throughout the day. Our guide conveyed stories about the alchemists’ quests for the Philosopher’s Stone, eternal youth elixirs, and gold transmutation with both passion and clarity. Even if English isn’t your first language, the atmosphere and visuals make the experience enchanting and easy to follow. One of the most striking things about the museum is how it blends authentic history with theatrical presentation. Yes — some items are reconstructions rather than actual 16th‑century relics, but everything is displayed thoughtfully to help you imagine the alchemical world as it once was. The space feels alive with stories of Prague’s mysterious past and gives visitors a rare glimpse into a time when magic and science weren’t yet separate disciplines. The museum also houses a charming shop where you can find bottles of elixirs, potions, and curios inspired by historical recipes. These make perfect novel souvenirs, especially if you’re fascinated by history or the esoteric. Just remember — the museum accepts cash only at the entrance, so come prepared. True to its size, the visit isn’t long — typically around 30–45 minutes — but it’s packed with enough detail and atmosphere to make it feel like a small adventure. Whether you’re a history buff, a fan of the supernatural, or just looking for something different from the typical tourist attractions, this museum is well worth your time. What I appreciated most was how accessible the whole experience is. You don’t need extensive background knowledge to enjoy it — your curiosity is enough. The guides are welcoming and enthusiastic, and even in the narrow underground corridors, the sense of stepping into an era where mystery was as real as science is unforgettable. In a city filled with stunning architecture, bustling squares, and classic museums, Speculum Alchemiae stands out as a hidden gem that offers a glimpse into a side of Prague that’s lesser‑known but deeply compelling. It’s perfect as a half‑day detour between sightseeing, a rainy day activity, or simply as a fascinating historical stop that makes your trip more memorable. Whether you’re exploring solo, as a couple, or with family, this museum offers something unexpected: a chance to walk into the shadows of Prague’s past and emerge feeling like you’ve uncovered a secret that most visitors overlook. Don’t miss it — it’s one of Prague’s most intriguing cultural experiences.

The tour was excellent. Especially if ypu are interested in chemistry/alchemy or at least the history of it you will like this museum. The gift shop prices are a bit high but that is ok.

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.

Very cool little museum about some of the history of alchemy in Prague focusing on Rudolf. The museum is small and the tour is short, but you get a good deal of info and the rooms are really cool to look at and imagine. The secret door is absolutely awesome and the centuries old elixir is quite cool to hear about and see! It’s short, but definitely a cool experience.

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.

Its a unique experience. The guided tour makes it more interesting and with a little bit of history. Pre book the tickets as they can take only limited number of people in the guided tour.

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.

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

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 ;)

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.

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.