taikensanka ha syuugoubasyo de hazimaru.

It is read:

たいけんさんか は しゅうごうばしょ で はじまる。

Word by word:

• 体験参加 = たいけんさんか
• 集合場所 = しゅうごうばしょ
• 始まる = はじまる

A more natural spoken version in everyday polite Japanese would often be:

体験参加は集合場所で始まります。

体験参加 is a compound noun made from:

• 体験 = experience, trial experience
• 参加 = participation, joining

Together, it usually means something like:

• trial participation
• participating as a trial
• joining for an introductory experience

The exact English wording depends on context. For example, at an event, class, or tour, 体験参加 might refer to someone joining on a trial basis before fully signing up.

は marks the topic of the sentence.

So 体験参加は means something like:

• As for trial participation...
• Regarding the trial participation...

The sentence is then saying something about that topic:

体験参加は集合場所で始まる。
= As for trial participation, it begins at the meeting place.

This is very common in Japanese. Instead of always marking a grammatical subject the way English does, Japanese often introduces a topic with は and then comments on it.

Here, で marks the place where an action or event happens.

So:

• 集合場所で始まる = begins at the meeting place

This is natural because 始まる describes an event beginning, and で is often used for the location where that event occurs.

Compare:

• 学校で勉強する = study at school
• 会議室で会議が始まる = the meeting starts in the meeting room

A learner might expect に because English uses at or in, but in Japanese, で often marks the location of an action/event.

That said, with some verbs of existence or destination, に is used instead:

• 学校に行く = go to school
• 机の上にある = be on the desk

集合場所 means meeting place or assembly point.

It breaks down as:

• 集合 = gathering, meeting up, assembling
• 場所 = place

So 集合場所 is the place where people are supposed to gather first.

In practical situations, this could be:

• the front entrance of a building
• a station exit
• a reception desk
• a designated meeting point for a tour or event

This is an important pair:

• 始まる = to begin, to start by itself / intransitive
• 始める = to begin something, to start something actively / transitive

In this sentence, the thing being described is 体験参加 itself beginning, so 始まる is the correct choice.

Compare:

• 授業が始まる。 = The class begins.
• 先生が授業を始める。 = The teacher starts the class.

Here, there is no person actively starting 体験参加 as the grammatical focus. The sentence just says that it begins at the meeting place.

Because 体験参加 is functioning as a single compound noun.

Japanese often combines nouns directly to make a new noun. English does this too:

• school bus
• meeting room
• trial lesson

So 体験参加 is not 体験の参加 here. It is one set phrase-like noun meaning trial participation.

This kind of noun compounding is very common in signs, schedules, notices, brochures, and formal written Japanese.

By itself, it most naturally means:

The trial participation begins at the meeting place.

In real-world context, that usually implies:

• participants should first come to the 集合場所
• from that point, the activity or process begins

So yes, it often suggests the starting point of the experience is the meeting place, not necessarily that the main activity literally happens there the whole time.

Japanese often leaves this kind of practical detail to context.

The plain form 始まる is often used in:

• written explanations
• schedules
• notices
• headings
• neutral descriptions

So this style can sound concise and matter-of-fact.

Compare:

• 体験参加は集合場所で始まる。 = plain, neutral, written/explanatory
• 体験参加は集合場所で始まります。 = polite, more conversational or customer-facing

Both are correct. The choice depends on tone and context.

Yes. In normal Japanese writing, spaces are usually not used, so it would normally appear as:

体験参加は集合場所で始まる。

You may also see a comma for readability:

体験参加は、集合場所で始まる。

That comma is optional. It just helps separate the topic from the rest of the sentence.

Yes, it is understandable and natural enough, especially in an informational or written context.

However, depending on the situation, native speakers might also say things like:

• 体験参加は集合場所から始まります。
• 体験参加の受付は集合場所で行います。
• 体験参加の方は集合場所にお集まりください。

The nuance changes slightly:

• で始まる focuses on where it begins
• から始まる focuses on the starting point
• other versions may sound more practical or more like instructions

So the original sentence is fine, but in real-life announcements, there may be other natural alternatives depending on exactly what the speaker wants to emphasize.