In the jumble of alleyways that is Prague’s Old Town, if you look
carefully, you’ll make out the form of the ancient fortress of Ungelt,
built over with baroque and renaissance facades, but still standing after
1000 years. This is the customs house of Ungelt, where foreign merchants
came to store their wares, and a reminder that Prague has always been a
cosmopolitan, multinational city ever since its earliest days.