ETH Zurich Tour: Semper Observatory

Semper Observatory Guided Tour at ETH Zurich

This 60-minute guided tour at ETH Zurich’s Semper Observatory suits astronomy enthusiasts and those interested in scientific history.

Highlights

• Visit one of ETH’s oldest research buildings, the Semper Observatory
• Explore the historic dome and the solar refractor inside the cupola
• See historical astronomical instruments used to observe sunspots

Description

Built in the 1860s near ETH Zurich’s main building, the Semper Observatory is among the university’s oldest research sites. Architects designed the observatory to study the cosmos, with generations of researchers making key observations here. The historic dome still houses the equipment used in the 19th century to track sunspots.

The Solar Tower, active from 1951 to 1980, was used to investigate the sun’s outer atmosphere and brought international scientific attention. This tour offers an opportunity to explore a significant piece of scientific heritage in Zurich’s architecture while learning about pioneering solar research.

Accessibility

• The guided tour is available in sign language. To book this option, contact barrierefreie-tours@ethz.ch at least two weeks in advance. Include the tour title and date in your email subject.
• The tour is also suitable for people with visual impairments. To arrange, contact the same email address at least three days before the tour with the tour title and date.

Includes

• 60-minute guided tour of the Semper Observatory led by a student guide

Excludes

• Transportation
• Food

Important Information

• Sign language tours require advance booking at least two weeks prior.
• Options for people with visual impairments require booking at least three days before the tour.

Cancellation Policy

Cancel up to 24 hours before the tour for a full refund.

For the best experience, book in advance and bring weather-appropriate clothing as part of the tour includes outdoor areas near the observatory.