Introduction to Lithuanian:
Lesson 29

Here's one useful tip:

Whenever you have some English words you don’t know how to say in Lithuanian, try adding as or if that doesn’t work - a.

Your chances of getting understood increase.

That’s how a bank becomes bankas, a theatre becomes teatras, a doctor becomes daktaras.

Since Lithuanian has no articles, and it doesn't have to use is, you should be able to say:

Where is the bank?

Answer: Kur bankas?
Not correct. Please try again.

Where is the doctor?

Answer: Kur daktaras?
Not correct. Please try again.