PRESS RELEASE

Press Release

[Grand Mercure Lake Biwa Resort & Spa] 【Mercure Kyoto Miyazu Resort & Spa】In-house tour activity “History and Culture x Mystery Solving” to enjoy while touching the history and culture of each region will start at two hotels on December 26, 2025

We add all-inclusive activity "Mystery Historia" to make your stay more enjoyable during the year-end and New Year holidays.

Located on the banks of Lake Biwa, the resort hotel "Grand Mercure Lake Biwa Resort & Spa" (Location: Nagahama City, Shiga Prefecture / General Manager: Mitsuharu Hashime) and the resort hotel "Mercure Kyoto Miyazu Resort & Spa" (Miyazu City, Kyoto Prefecture / General Manager: Kuniyasu Satonaka) overlooking Japan's three most scenic views "Amanohashidate" (Miyazu City, Kyoto Prefecture / General Manager: Kuniyasu Satonaka) will conduct activities to solve mystery historia "History x Mystery" in the hotel building from December 26, 2025 (Friday).

Background of implementation

"Hanare Journey" is a new style of travel proposed by Grand Mercure and Mercure, a "unknown area" one step away from the center of tourist destinations. In order to further enhance this value, the history mystery solving program "Mystery Historia" was born. Under the theme of great people and anecdotes living in Lake Biwa and Tango, and the stories of Nanahime Tango and the Toyotomi brothers, we invite you to an intellectual adventure where you can experience local stories as an experience. By incorporating experiences that unravel history in addition to superb views and food culture, travel evolves from "seeing and eating" to "thinking and discovering". The more the mystery is solved, the more the charm of the land is engraved in your heart. In addition, it is an indoor content that can be enjoyed regardless of the weather, so it supports Nagahama's "racation system" and is ideal for family trips and work vacations.
By experiencing this program, we will provide the value of a new journey that connects with the community, with the hope that it will be a catalyst for visiting the community.

Solving Mystery in Grand Mercure Lake Biwa Resort & Spa

From February, the Kitaoumi Toyotomi Exposition, including the Taiga Drama Museum, will be held in February in Hidenaga Toyotomi, the main character of the 2026 Taiga drama drama, and Nagahama City, a land related to Hideyoshi.
In Grand Mercure Lake Biwa Resort & Spa, under the support of the Nagahama City Board of Education and the Kitaoumi Toyotomi Expo, we will conduct a mystery solving activity in Nagahama, ruled by Hideyoshi Hashiba.
In this activity, customers will participate in the story as their younger brother Hidenaga, and in cooperation with their older brother Hideyoshi and vassal Sakichi Ishida, they will search for the treasure that will sleep in the Asai family. The location of the hotel, Nagahama (formerly Kitaoumi), is a place related to the Hidenaga and Hideyoshi brothers. By superimposing Kitaoumi at that time in the hotel hall and solving the mysteries scattered around various places, it combines history, stories, and thoughts, and through this experience where the stage of history and the modern space intersect, you can enjoy and learn deep history.

[Experience image]

Download the dedicated app from the QR code and start it.
There is a QR code in a place that looks like a scenic spot in each area, and when you read it, you will be asked questions related to scenic spots and stories.
We will go around the museum according to the story and unravel all mysteries.

[Introduction of story]
Warring States period: Oomi Province
After a long battle, Nobunaga Oda finally defeated his enemy Nagamasa Asai, gave Hideyoshi Hashiba, who made achievements in this battle, the former territory of the Asai family. Hideyoshi and his younger brother, Ichiro Ko (later Hidenaga), created a new town in Nagahama and worked hard day and night as a new castle owner.
One day, Hideyoshi, who was worried about money, hears rumors in the castle town that the legacy of the Asai family is still sleeping somewhere.
There, a smart boy, Sakichi Ishida (later Mitsunari), came to report saying, "I have found a hidden letter of Nagamasa Asai."
The letter may contain the secret treasures of the Asai family.……？
You become a small Ichiro, traveling around Kitaoumi with Hideyoshi and Sakichi to search for hidden treasures of the Asai family.……。

[Overview]
Start of the event: From December 26, 2025 (Fri)
※The estimated time of the experience is 30 to 60 minutes.
※The contents may be changed due to hotel circumstances, and there are closed days and excluded days.
Price: It is included in the all-inclusive plan.
Remarks: ・It will be an activity for guests only. No reservation required.
・The contents are subject to change depending on the situation.
・This is an experience using the Internet environment and smartphones and tablets.
・Customer's own communication fee may be charged.
Planning and production: RiddleUP, Production Cooperation: ASATEC Corporation
Supported by: Nagahama-shi Board of Education
Kitaoumi Toyotomi Exposition Executive Committee
URL： https://grand-mercure-lakebiwa-resortandspa.jp/lp/mystery-quest

Solving Mystery in Mercure Kyoto Miyazu Resort & Spa

In Mercure Kyoto Miyazu Resort & Spa's puzzle, a time-slip customer walks through the hotel with Galasha, one of the Seven Princess Tango, to unravel the mystery based on the surrounding landscape. You will experience the world view that combines the stage of history and the hotel space while touching on the legend of Shichihime Tango transmitted to Tango. By searching for "Hishime's Story" and solving the mystery set up in various places of the hotel, you can enjoy the feeling of traveling around Tango (Ine, Isosan, Tateiwa, Iso Beach, Yura Minato).
In devising the content to solve this mystery, we emphasized the importance of being exposed to the traditions and local specialties that remain in the Tango region, and provided the "Miyazu City Board of Education" and "Inecho Tourism Association" with information provision. Was. With Nanahime Tango, you will enjoy an experience of thinking about history while learning.

[Experience image]

Download the dedicated app from the QR code and start it.
There is a QR code in a place that looks like a scenic spot in each area, and when you read it, you will be asked questions related to scenic spots and stories.
We will go around the museum according to the story and unravel all mysteries.

[Introduction of story]
Garasha Hosokawa, who came to the new land as Mrs. Miyazu Castle, was given a mysterious map by a monk, a castle town, along with the story of "The Story of Six Princesses".
The map seems to indicate where to go next……。
When I tried to find six scrolls whose stories were supposed to have been written to learn about Tango's country, I encountered you who slipped back in time. You decide to unravel the mystery with Galasha and look for six scrolls!
Garasha's Mystery Solving Tango Tabi begins here―

[Overview]
Start of the event: From December 26, 2025 (Fri)
※The estimated time of the experience is 30 to 60 minutes.
※The contents may be changed due to hotel circumstances, and there are closed days and excluded days.
Price: It is included in the all-inclusive plan.
Remarks: ・It will be an activity for guests only. No reservation required.
・The contents are subject to change depending on the situation.
・This is an experience using the Internet environment and smartphones and tablets.
・Customer's own communication fee may be charged.
Planning and production: RiddleUP, Production Cooperation: ASATEC Corporation
Cooperation: Miyazu City Board of Education, Ine Town Tourism Association
URL： https://mercure-kyotomiyazu-resortandspa.jp/lp/mystery-quest

Grand Mercure Lake Biwa Resort & Spa

Located on the banks of Lake Biwa, it is a resort hotel with a view of the calm lake spreading in front of you. The view of the sunset, which was selected as one of Japan's Top 100 Sunsets, is spectacular. It has good access to sightseeing spots such as "Kurowabe Square" and Chikubushima Cruise Shipyard, making it a convenient place for sightseeing in and around the city.
[Location] 38 Oshima-cho, Nagahama City, Shiga Prefecture 526-0066
【TEL】 03-6743-6550 (Reservation Center)
[Access] Free pick-up service is available from JR Nagahama Station West Exit (Biwako Exit). About 15 minutes by car from Nagahama IC on the Hokuriku Expressway.
【URL】 https://grand-mercure-lakebiwa-resortandspa.jp/

Mercure Kyoto Miyazu Resort & Spa

A resort hotel where you can see Amanohashidate, one of Japan's three most scenic views from a hill overlooking Miyazu Bay, and enjoy Kyoto in the sea. As "Local Discovery-Regional Experience-", you can enjoy making 100% silk misanga unique to the birthplace of Tango Chirimen in an all-inclusive manner.
[Location] 58 Iwamoto, Koaza Tai, Miyazu City, Kyoto 626-0068, Japan
【TEL】 03-6627-4666 (Reservation Center)
[Access] It takes about 12 minutes by taxi from Miyazu Station of Kyoto Tango Railway, and about 15 minutes by car from Miyazu Amanohashidate IC of Kyoto-Jukan Expressway.
【URL】 https://mercure-kyotomiyazu-resortandspa.jp/

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