It's in Belgium, and takes in Spain (3)

I believe the answer is:

spa

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'spain' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for spa that I've seen before include "Bath - mineral water spring" , "A curative mineral spring, or place with one" , "A therapeutic hot spring" , "Resort with mineral water spring" , "town in Belgium" .)

I've seen this clue in the Evening Standard.

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