5. Golden Temple:
It is one of the main attraction for the tourist. It is a very religious place for Sikhs. The temple is always filled with people. It always crowded but the feeling and the vibes that you get here is really different and positive. You should visit the temple twice once in the morning and once in the night when it is lit up.
While going in you need to remove your shoes outside and you need to cover you're head with a bandanna. You can either buy this bandanna from the hawkers or there is a box kept of free ones near the entrance from which u can pick one up and use it and keep it again over there after the visit.
You should definitely try the langar over there. Langar is basically a community kitchen in the gurdwara where a free meal is served to all the visitors.
If you want to do the darshan of the main temple then you need to stand in queue for that.
It would take hours to get the darshan as the queue are too big. People recommended me to go early in the morning around 3.30-4 am for the darshan and stand in a queue at that time as there is a little bit of less crowd at that time.