Keelung Port, Taiwan. Cruise ships dock in centre of Keelung. The train station is about 10 mins walking distance away from the pier, heading to Taipei city in 24km. As, Taiwan’s 2nd largest seaport after Kaohsiung, Keelung also named as Rainy Port as it is frequently rain here.
Miaokou food market is famous for local snacks for day time and night too. It is easy access from the pier. After food, you would also visit to one of the fort ~ Ershawan Fort which has 5 cannons for your photo shooting. Taking the pubic bus from the train station, you may visit the Jungjeng Park, which allows you to overlook the city and labour. 
Taking the train and explore Taipei city will be another good choice.  Visiting National Palace Museum, Chiang Kai Shek Memorial Hall, Confucius Temple, Lungshan Temple, etc and of course get the chance to taste many of the local cuisine here.

There are 2 terminals located Keelung port which is Keelung Port E2 Terminal and West Coast Information Center. The Customs Clearance for embarkation & disembarkation process are shown at below: 

Departure from Keelung Port Process
1.Coast Guard Administration: Luggage Inspection for embarkation Safety)
2.National Immigration Agency: Passengers and documents Inspection

Arrival In Keelung Port Process
1.Center for Disease Control (CDC): Passenger Quarantine (Fever Quarantine)
2.National Immigration Agency: Inspection on Passenger and document conformance
3.Customs Administration: Luggage Inspection  for contrabands, Tax imposing on over-weighted items
4.Center for Disease Control: Luggage Inspection (Animals and plants)

Keelung Cruise Port Map

The night view of Keelung Harbour

Open space of Keelung Harbour