tenzisitu ha kotira desu.

It is usually read てんじしつ (tenjishitsu).

• 展示 = exhibition, display
• 室 = room

So 展示室 is a very natural word for an exhibition room, display room, or gallery room depending on context.

When は is used as the topic particle, it is pronounced wa, not ha.

So in this sentence:

• 展示室は = tenjishitsu wa

This is one of the first pronunciation exceptions learners meet in Japanese. The kana is still written は, but its particle pronunciation is wa.

は marks the topic of the sentence.

So 展示室は means something like:

• As for the exhibition room, ...
• The exhibition room, ...

It sets up 展示室 as the thing being talked about, and then the rest of the sentence says something about it: こちらです.

This is very common in Japanese. Instead of always structuring sentences around a strict English-style subject, Japanese often introduces a topic first.

This is a very common question.

In this sentence, は is natural because the speaker is presenting 展示室 as the topic:
As for the exhibition room, it is this way / here.

If you used が instead, the nuance would change. が tends to identify or single out something more directly as the subject. In some contexts, 展示室がこちらです could sound less natural or more marked than 展示室はこちらです.

A simple way to think about it:

• は = talking about something as the topic
• が = identifying something more directly

In polite guidance or explanations, は is very common.

こちら is more polite and softer than ここ.

Compare:

• ここ = here
• こちら = here / this way / this side, but more polite

In places like museums, stores, stations, and offices, staff often use こちら because it sounds more courteous.

So 展示室はこちらです sounds natural for polite directions or guidance.

It can mean either, depending on context.

In a sentence like 展示室はこちらです, こちら often has the nuance of:

• here
• this way
• this is the place

If someone is physically guiding you, it may feel like this way.
If they are pointing to a location on a map or nearby area, it may feel more like here.

So the exact English wording can vary, but the Japanese is natural in both situations.

です makes the sentence polite and works like the polite copula.

It is often translated as is, but it is better to think of it as a polite sentence ending that links the topic with what is being said about it.

So:

• こちらです = it is here / this way

Without です, the sentence would sound less polite or incomplete in this kind of situation.

Not really. Japanese sentence structure works differently.

A rough breakdown is:

• 展示室 = exhibition room
• は = topic marker
• こちら = here / this way
• です = polite copula

A very literal gloss would be:

• As for the exhibition room, it is this way.

That is closer to the Japanese structure than a natural English translation would be.

No. Normally, Japanese is written without spaces.

So the standard written form is:

展示室はこちらです。

Spaces are often added in teaching materials to help beginners see the parts of the sentence more clearly.

Yes, that is grammatically correct.

• 展示室はこちらです = more polite, softer
• 展示室はここです = simpler and less formal

Both can mean roughly the same thing, but こちら is especially common in polite service speech.

Because that would express a different idea.

• 展示室はこちらです = The exhibition room is here / this way.
• 展示室があります = There is an exhibition room.

あります is used for the existence of inanimate things.
This sentence is not mainly saying that an exhibition room exists; it is identifying its location in a polite way. That is why こちらです is the natural choice.

No. こちら can have several uses depending on context, including:

• here / this way
• this side
• this one
• sometimes even this person in very polite speech

But in 展示室はこちらです, it is clearly being used for location or direction. Context tells you which meaning is intended.