Time Machine at Letná park
The Time Machine at Letná park, for many known simply as a metronome, counts down the time in the Letná gardens at the left river embankment right above the Čech Bridge.
This is the former site of the infamous monument of dictator Stalin, derisively called "queue for meat". In 1991 this place was equipped with "metronome", which was created by sculptor and professor at the Academy of Arts Vratislav Karel Novák. Although it does remind of Mälzel famous metronome with the reverse pendulum, its mechanical design is quite different.
The Time Machine is nearly 25 meters tall and weighs seven tons. Installing the pendulum could not have been performed by the crane due to the damaged statics stand after shooting Stalin's monument. Therefore, it was placed there by a giant helicopter.
The mystery remains, under what conditions does the metronome sometimes shake and sometimes it does not. The area under the metronome is popular especially among skateboarders, who enjoy practicing here. Not to mention, the view of Prague from this place is magnificent.