• Kids' tours once a month, on the first Saturday at 2pm, 3:30pm and 5pm, for kids from 7 with up to two adults each
• Evening tours in German, suited to kids from about 9; when possible, one public tour a month is in English
• Unheated dome, so dress for the outside temperature; tours run in any weather, but telescope viewing needs a clear sky

Urania Observatory is a 51-meter tower at the western edge of the Old Town, opened in 1907 as Switzerland's oldest public observatory. Tours take place in a creaking wooden dome that turns to open a slit to the sky.

Guides explain the planets with screens and computer simulations, and on clear nights kids look through the original 12-tonne Zeiss telescope.