Here,you can talk about your favorite city in the Ratchet and Clank Series.
I'll start:
My favorite would have to be Meridian City on Planet Igliak because the design of the city is cool and the fact that Flint Vorselon broke into Grummelnet HQ and stole the robotic suit he has today.
Also,Igliak is a weird planet because it orbits a radioactive sun and despite that,still has a high population.
That's my favorite city.Now what's yours?
I dunno if this counts, but the Lombax ruins on Fastoon is my favorite city, otherwise it would be Metropolis on planet Kerwan in TOD
Yeah,Fastoon counts.It's just destroyed and broken up with some buildings toppled over.Kerchu City also counts,even though it doesn't look like a city,just so everyone knows.
I think I like Metropolis the most, it's such a nice design, so big and detailed 
But I do like other cities too, like Meridian city… Megapolis in Bogon is kinda cool too, and funny with those cleaner bots that attack you for no reason XD
I like Metropolis on planet Kerwan. I enjoyed seeing it in hi-def in ToD, but it was the first level, and as with all R&C games you can't return there until challenge mode, so i guess I liked meridian city, as it highly resembled metropolis and you can go back there whenever you want.
Metropolis is the best to me
Wow,I see lots of people like Metropolis.Well,it is a pretty memorable city.But the one from TOD was the best.With R&C1 as the runner up.The UYA is last sadly because of the less appealing colors.
Are there any more cities that you like besides Metropolis? 
I thought the city of Kronos looked pretty cool, dark, sinister and stylish =P
But yeah I did think Meridian city was a nice looking place as well, it's where Vorselon stole his mechanical suit
Are there any more cities that you like besides Metropolis?
Metropolis! 
Just kidding with you.
But yeah, there are other cities I like other than Metropolis in the R and C universe.
I liked the cities in Going Commando like Silver City on Planet Boldan or Canal City on Planet Notak. Their designs were appealing and great to visit to.
Even if this planet wasn't my favourite in Tools of Destruction, but I found Stratus City had a really massive and gorgeous design overall.
And even if there was one city in A Crack in Time, but I thought Axiom City had a really intriguing design, despite the place not being interesting after your first visit.
My favorite city is Metropolis, but I also like Meridian City.
Mine is got to be Metropolis cool design just like Tara said
I know A4O isn't out yet, but Luminopolis City does look like an lively and awesome city to visit. 
I know A4O isn't out yet, but Luminopolis City does look like an lively and awesome city to visit.
I can't wait till All 4 One comes out so I can see Luminopolis!
My favorites would have to be Silver City and Stratus City, both beautiful designs. I love using the robo-wings on Stratus City and the soundtrack is gorgeous!
Metropolis in ToD (I'm not a big fan of the PS2 Metropolis) because of its nice balance of everything and its colourfulness, but since half of people pick that, I have to say I like Stratus City too. And Igliak's cities, Meridian City and Luminopolis look nice too, from what I've seen from the Luminopolis out of the trailers.