kono tenji ni wa, aburae to choukoku ga arimasu.

topic particle

Breakdown of kono tenji ni wa, aburae to choukoku ga arimasu.

• と: noun-connector particle
• が: subject particle
• この: this

Questions & Answers about kono tenji ni wa, aburae to choukoku ga arimasu.

Why is it に は in この展示には instead of just に?

には is に + は.

• に marks the location or context where something exists.
• は makes この展示に the topic: as for/in this exhibition...

So この展示には、油絵と彫刻があります has a feeling like:

• In this exhibition, there are oil paintings and sculptures.
• As for this exhibition, it has oil paintings and sculptures.

Using は often adds a slight contrastive or topical nuance, even if that contrast is very mild.

If は marks the topic, why do we still need が in 油絵と彫刻が?

Because は and が are doing different jobs.

• この展示には = the topic / setting
• 油絵と彫刻が = the things that exist in that setting

With あります, the thing that exists is usually marked by が.

So the structure is basically:

• [Place / context + に(は)] [thing] が あります

Example pattern:

• 部屋には机があります。
  • In the room, there is a desk.

Here:

• この展示には = in this exhibition
• 油絵と彫刻が = oil paintings and sculptures
• あります = exist / are