Read the passage and answer the questions:

Last summer, Nga went to Singapore with her family. First, they visited Merlion Park. It has two statues of the Merlion, which has the head of a lion and the body of a fish. They took a lot of photos there. Then, they visited Marina Bay Sands. It is a big resort with tall and beautiful buildings. They ate some delicious food there. Finally, they went to Bird Paradise. It has many colourful birds. They bought a lot of postcards. Nga had a wonderful holiday!

Where did they go last?