Georgetown is split, broadly speaking into Chinatown & Little India, each with their own assortment of temples & markets. There's lots of evidence of its colonial past too. The town hall & law courts really wouldn't look out of place anywhere in Britain.
That said, I feel Georgetown is like a woman of a certain age: best viewed by candlelight. Daytime reveals peeling paint & crumbling plasterwork that again wouldn't look out of place anywhere in Britain. UNESCO world heritage? Anyway, here are some of the good bits.