Hotel tour-type mystery historia

Concept

Set in the hotel building that reproduces Kitaoumi, a new historical mystery begins. You become Hidenaga, and together with Hideyoshi and Sakichi Ishida, on a journey to search for the treasures of the Asai family. Every time you follow clues and unravel the mystery, the culture and signs of the Sengoku rise up in front of you...
Please experience an immersive mystery solving activity that “walks and tastes” history.

Story

The Sengoku period (period of warring states): Oomi Province
After a long battle, Nobunaga Oda finally defeated his enemy Nagamasa Asai, gave Hideyoshi Hashiba the former territory of the Asai family to succeed in this battle.
Hideyoshi and his younger brother Ichiro Ko (later Hidenaga) created a new town in Nagahama and worked hard day and night as a new rice castle owner.
One day, Hideyoshi, who was worried about money policy, hears rumors in the castle town that the Asai family's heritage is still sleeping.
There, a smart boy, Sakichi Ishida (later Mitsunari), came to report saying, "Nagamasa Asai's hidden letter has been found."
The letter may indicate whether the Asai family's treasure is a treasure.……？
You become Koichiro, and travel around Kitaoumi with Hideyoshi and Sakichi to search for hidden treasures of the Asai family.……

Overview

Period of the event: From December 26, 2025 (Friday) to full year

Time required: About 30 to 60 minutes

Method of participation: Please check the posters and flyers in the lobby and hotel building.

Prices: Included in all-inclusive

Target age: Over 5 years old

Reservation: Not required

How to play 3 steps

Download the dedicated app from the QR code and start the activity!
There is a QR code in a place that looks like a scenic spot in each region, and when you read it, a mystery related to the scenic spot and story is developed.
In line with the story, we will go around the museum and unravel all mysteries.
Please join us to solve the mystery where you can learn about the history of the land.

QR code reading
Hiding in the hotel
Let's find a mystery solving spot!
Solve the mystery,
Let's proceed with the story!

Click here for the smartphone special page

Coming Soon

Notes

・It will be an activity for guests only. (No reservation required)
・The content, provision period, and provision time may change depending on the situation. (Closed days, excluded days, etc.)
・This is an experience using the Internet environment and smartphones and tablets.
・Your own communication fee may be charged.
・Please give consideration to other customers during the experience.

Producers and partners

Planning and production: RiddleUP, Production Cooperation: ASATEC Corporation
Supported by: Nagahama City Board of Education, Kitaoumi Toyotomi Exposition Executive Committee

If you haven't made a reservation, click here

Grand Mercure Lake Biwa Resort & Spa is an all-inclusive that includes dinner, breakfast, drinks and snacks in the lounge, hot springs and activities. You can enjoy dinner and breakfast that make use of seasonal ingredients, as well as free drinks in the lounge.
Please make a reservation with your favorite plan and enjoy the Mystery Historia experience around the hotel freely.