ETH Zurich Tour: Semper Observatory

In the 1860s, Gottfried Semper had the Federal Observatory built. Generations of researchers have already taken a look into space. Discover an architectural gem.
In the 1860s, not only was the main building of ETH Zurich built, but just a stone's throw away, architect Gottfried Semper also had the Federal Observatory, one of the oldest research buildings at ETH Zurich, built. Generations of researchers have gazed into the vastness of space from here. During a visit, you'll see the historic dome, where sunspots were observed as early as the 19th century, and the solar tower, which was used to study the outer solar atmosphere between 1951 and 1980 – a project that attracted worldwide attention. Explore a piece of scientific history, discover an architectural jewel in the center of Zurich, and reach for the stars.

Sign language
This tour is available in sign language. If you'd like to use this option, please contact us at least two weeks before the tour at barrierefreie-tours ( at ) ethz.ch. Please include the title and date of the tour in the subject line of the email.

Suitable for people with visual impairments
This tour is especially suitable for people with visual impairments. If you'd like to use this option, please contact us at least three days before the tour at barrierefreie-tours ( at ) ethz.ch. Please include the title and date of the tour in the subject line of the email.

To guarantee availability book as soon as possible. Early booking is worth consideration especially if you planning the trip during high season like public holidays or weekends.

This excursion you can cancel with no cost up to 24 hours before the start of the trip. If you cancel it after 24 hours or not show up on the excursion you will still be charged the full price of the activity. Being late on pick-up or departure will be considered as not showing up.