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Würzburg

The Invisible Light: Röntgen's X-Ray Revolution

2.9 km97 min6 stops

What awaits you on this Red Thread tour

Step into the gas-lit streets of 1890s Würzburg and uncover the thrilling, secretive, and world-changing story of Wilhelm Röntgen. This immersive walking tour takes you beyond the textbook facts to explore the intense seven weeks of isolation, the rapid global shockwave of the telegraph, and the profound ethical choices that gave humanity the gift of the X-ray. Discover how a quiet provincial university town became the epicenter of a medical and scientific revolution.

Itinerary

1

TOUR START

Alte Universität

The historic Renaissance courtyard that set the stage for Würzburg's 19th-century scientific ascendancy.

Alte Universität

Image by Hajotthu on Wikimedia Commons (CC BY 3.0)

1.03 km • 16 min
2

STOP 2

Juliusspital

A historic hospital representing the medical establishment that was rapidly transformed by the advent of diagnostic X-rays.

Juliusspital

Image by Haeferl on Wikimedia Commons (CC BY-SA 4.0)

0.69 km • 11 min
3

STOP 3

Würzburg Hauptbahnhof

The central transit hub symbolizing the rapid, telegraphic dissemination of Röntgen's discovery to the world.

0.47 km • 7 min
4

STOP 4

Röntgen-Gedächtnisstätte

The former Physical Institute where Röntgen spent seven secretive weeks verifying his accidental discovery of X-rays.

Röntgen-Gedächtnisstätte

Image by Salino01 on Wikimedia Commons (CC BY-SA 3.0)

0.20 km • 3 min
5

STOP 5

Röntgenring

A major street renamed in 1909, illustrating how scientific legacy becomes woven into the everyday geography of a city.

Röntgenring

Image by Parklife on Wikimedia Commons (CC BY-SA 3.0)

0.53 km • 8 min
6

END

Alter Kranen

An 18th-century crane on the river Main, serving as a backdrop to discuss Röntgen's ethical refusal to patent his discovery.

Alter Kranen

Image by Christian Horvat on Wikimedia Commons (Public domain)

Where the tour takes place

Starting point and rough tour area – the exact route unfolds in the app.

Good to know

  • Ideal for Science enthusiasts, history buffs, architecture lovers, and curious minds who enjoy deep, narrative-driven urban exploration.
  • Best time Late afternoon, ideally starting 2 hours before sunset to experience the shifting light and shadows that evoke the atmosphere of Röntgen's 1895 laboratory.
  • What to bring Comfortable walking shoes and a curious mind.
  • Photography The golden hour at the Alte Universität courtyard is unmissable.
  • Pacing Take your time at the Röntgen Memorial Site to truly absorb the history.
  • Weather Bring an umbrella if rain is forecasted, as most stops are outdoors.
  • Audio Use noise-canceling headphones to fully immerse yourself in the narrative.
  • Your voucher You can redeem your voucher for two years from purchase. Once redeemed, you have 14 days of access and can enjoy the tour as often as you like during that time.

Your guide

Tom Bennett
Audio sample
0:000:00

Tom Bennett

  • Urbanism, Infrastructure & Innovation
  • Northern England

Architecture and urban planning professional. Explains the city's hidden systems – from mobility to water pipes – clearly and vividly.

Frequently asked questions

How do I get to the tour after buying?

You see your voucher code right after payment – and you also receive it at the email address you entered at checkout. Redeem that code in the Red Thread app; that's where the tour starts.

When does my access start?

Only when you redeem the code in the app, not at purchase. From redemption you have 14 days of access to the tour.

Do I need the Red Thread app?

Yes. The free Red Thread app turns your tour into a vivid experience: with audio, a map, and thoughtful prompts, it guides you from place to place in an engaging and entertaining way. It's available free for iOS and Android.

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