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A super authentic mystery solving game in the park! Soleil Story

Update : 2025.12.23

KAGENAZO", a creative group for solving local community-activated riddles, has seriously created this event, which is the largest riddle-solving event in the history of Soleil Hill! Can you successfully complete the biggest riddle in the history of Soleil Hill?

summary

My name is Haruto. I came to Soleil Hill for a seaside school.

I was born weak and cannot run around or play in a boat like everyone else.
Everyone else was free to go, but I was told to wait here alone.

I'm used to it because it's what I always do, but I'm bored...
I looked down at my feet and saw an envelope. Inside was a letter.

Nice to meet you. My name is Natsumi. Please call me Nacchan.
I was born weak and have been in the hospital for a long time.
If anyone picks up this letter, please solve the riddle and send me the answer."

A letter is a turning point of destiny. A story of Soleil connected by a "mystery".

Event Details

Ticket sales will begin at 12:00 on December 24, 2025.
Time required: 180 minutes You can also enjoy the attractions and restaurants in the park while solving the riddles. (Not included in the ticket).
Participation fee] 2,750 yen
Recommended age] 9 years old and up
What to prepare: Smartphones and tablet terminals with camera functions and the ability to read two-dimensional codes.
*Use the official LINE account.
*Web communication charges are to be borne by the customer.
*Please be careful not to run out of battery power when using this product.
Note: Staff will exchange your ticket for a mystery kit when you arrive at the park. There are three exchange locations: Entrance Office, Nagai Base, and GOGO Cart Reception.

Click here for tickets

トレーラーハウス宿泊体験型謎解き「Trailer House Mystery」が2026年3月1日（日）よりスタートOh my god!!!

トレーラーハウスに宿泊した体験者は、とある一枚の謎をきっかけに、ある家族にまつわる物語へと引き込まれていきます。目の前にある空間、残された手がかり、そして家族の記憶――

参加者は謎を解き進めながら、物語の中に隠された秘密を解き明かしていきます。自然豊かなロケーションの中で過ごす時間そのものが、ストーリーの演出となり、宿泊体験に新しい価値を生み出します。

「365日誰もが遊び愉しみ尽くせるエンターテインメントパーク」をテーマに、自然・体験・滞在価値を高め続けるソレイユの丘。今回の取り組みでは、滞在時間の拡張・家族・グループの共体験創出・エンターテインメントによる地域活性を目的に、謎解きクリエイティブのノウハウを活かした新しい宿泊体験を実現しました。
海を望むロケーションに設置された「海のキャビン」と、自然に囲まれた「森のキャビン」など、滞在型体験を楽しめる宿泊施設として展開されています。

■ 開催概要

【コンテンツ名】：Trailer House Mystery
【開始時期】：2026年3月1日（日）〜
【販売価格】：無料（トレーラーハウスの宿泊料は別途）
【体験時間】：約1時間
【開催場所】：「長井海の手公園 ソレイユの丘」 トレーラーハウスエリア（神奈川県横須賀市長井4丁目）
【体験形式】：宿泊者向け体験型謎解きコンテンツ（A4用紙謎解きキット）

【体験方法】：①ソレイユの丘公式サイトよりトレーラーハウス宿泊をご予約

　　　　　　 ②宿泊当日受付にて Trailer House Mysteryを受け取り！

　　　　　　 ③実際のトレーラーハウス内で謎解きに挑戦！

▼ 主な施設情報

【チェックイン】：13:00〜17:00
【チェックアウト】：10:00
室内：畳仕様・空調設備あり
海のキャビン：全12室（約13㎡）
森のキャビン：全8室（約19㎡／愛犬同伴可）
料金目安：18,700円（税込）〜（施設により異なる）
自然の中で過ごす滞在体験と、今回の「Trailer House Mystery」が融合することで、宿泊そのものが物語体験へと変化します。

▼ トレーラーハウス宿泊予約　予約は公式サイトより受付しています。
トレーラーキャビン予約ページ（公式）

Mystery planning/production

KAGENAZO (Operated by FUN SPIRITS Corporation)

Producer＆Scriptwriter：かげたろー

Soleil SORY is fully produced by KAGENAZO's representative, Kage-taro, who is a member of KAGENAZO, a creative team for solving mysteries that are currently gaining popularity in the region!
Let's try to solve the Soleil riddle that KAGENAZO has seriously produced!

↓Click here to see the location scouting for the mystery production.

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EVENT LIST

  • Main Entrance Construction

    Tuesday, February 24, 2026The main entrance will be closed due to ceiling construction. Entrance gate next to the building,dog entrancePlease enroll your child from

    During the construction period, tickets sold at the main entrance will be available for purchase,Office in green doorPlease go to

    During the construction periodweekdayto use the pre-payment machines in parking lots 1 and 2,Small gate by the main entranceThe following is available from

  • Status of park operations

    【【 Information on the operation of playground equipment in the park on Wednesday, Feb. 25].

    LAZARZONE will be suspended on weekdays.

     

    Soleil Train is closed on all holidays.

    Due to maintenance, the service will be suspended on 2/25 (Wed.) and 2/26 (Thu.).
    December through the end of February,Closed every ThursdayThe first two are the following.
    Thank you for your understanding.

  • Thanks Day for Yokosuka Miura Citizens (free parking days) in February and March

    Due to calendar conflicts, Yokosuka Miura Citizens' Appreciation Day will be held on the following dates in February and March.

    Free parking days in February
    February 8 (Sunday)
    Saturday, February 14
    February 15 (Sunday)
    Saturday, February 21

    Free parking days in March
    March 8 (Sunday)
    Saturday, March 14
    March 15 (Sunday)
    Saturday, March 21

    *Only residents of the city are eligible.
    *Please present proof of address on the day of the event.

    Please be sure to make a mistake when visiting the park.
    We are sincerely looking forward to your visit.

  • Regular closing days of the park facilities

    Click here to check the regular closing days of the park's facilities.

  • About the opening of the hands-on workshop

    The Cooking Experience Workshop will be closed during the times indicated in the link below.

    Cooking Experience Workshop Schedule

    Craft Workshop Schedule

    For information on dates when attractions and facilities are closedthis way (direction close to the speaker or towards the speaker)for more information.