Having a tour guide at the destination

[Nika]

I recently went to London and a friend who lives there showed me the city. As she knows what I like, the experience was great! So I was thinking to get someone to do a "tour guide" on my next adventure.
Do you think it is worth having a tour guide at the destination?

[Preion]

If we see most of the times sources like tour niagara falls new york helps us majorly and because we can get to have ideas through i am sure that is decent much.