Planetárium Praha is a planetarium located in Bubeneč, Prague, next to the Stromovka park and Výstaviště Praha. Its dome is one of the largest in the world, measuring 23.5 m in a diameter. It was opened on November 20, 1960. It is equipped with both optomechanical and digital projectors.
The optomechanical Cosmorama, installed in 1991, is made by Carl Zeiss AG and it is the last still working device of this type. It is currently placed on moving arms in order to be able to hide and not to shadow a modern digital projection.
The planetarium presents tens of prepared shows and is open every day except Fridays.