This clock:



It's maybe a 5 minute walk from the Astronomical clock.

Just to the right of the clock is Pařížská. Walk that north like a 1/10 of a mile or more to Široká. Make a left. Then walk west about 80 yards to Maiselova. Turn right. You should see it in 50 feet.

Or get in a cab and ask to go to the Jewish Town Hall.

You might see the Golem on the way ....