Busan is South Koreas 2nd largest city with over 3.6 million people
Known for its beaches, mountains and temples
Go here for its laid back atmosphere compared to Seoul
How to get there
By Plane: Busans international airport is Gimhae Airport (code: PUS). It is not as shiny and new as Seouls Incheon airport but still has many domestic and international departures/arrivals.
By Train: Busan is well connected on the Korean rail network and is a major hub for KTX high speed trains. Seoul and Busan are connected by train and take between 120-150 minutes.
How to get around
A very extensive bus and subway system exists in Busan (same as Seoul) and is very easy to use. T-money works all over the country so of course it is used here also.
Full guide on using the subway here
I can only comment on where I stayed; Hotel Foret Busan Station. I loved it here, I was right next to the main station and there were tons of dining and shopping options. Plus it was easy access to take a day trip out to see Haedong Yonggungsa temple. The rooms were clean, the staff was very nice but as in most hotels in Asia the bed was as hard as a rock.