The Marriage Registry Office in Zug is in the town hall at Kolinplatz. The ceremony room is small but pretty and elegant. Only a handful of guests fit into it (see the second picture: the room’s wall is right after the chairs on the right). It has classical period furniture and is located centrally (use Casino parking). The couch instead of two separate chairs for the wedding couple is a beautiful detail, rarely found elsewhere, see the picture below).
Website: Zug Wedding Registry Office.

Zug Townhall

The ceremony room seen from the entrance