Old Town Hall
From Tardis Wiki, the free Doctor Who reference
The Old Town Hall was a building in the Old Town Square in Prague, its most notable feature being its Astronomical Clock, which was built in 1410. (PROSE: The Long Step Backward, Midnight in the Café of the Black Madonna)
The First Doctor, Vicki Pallister and Steven Taylor saw the building and its clock on their visit to Charles University in Prague in 2348. (PROSE: The Long Step Backward)
