Nima Sand Museum: A One-Year Hourglass and Singing Sand

At Nima Sand Museum in Oda, Shimane, an hourglass measures a whole year. Called Sunagoyomi, it lets one metric tonne of sand pass through a tiny opening over that time. The museum says it was installed to encourage the protection of nearby Kotogahama, a beach where sand can squeak underfoot. The museum’s explanation

That connection makes the giant clock more interesting than its size alone: sand becomes something you can watch to understand time, and something you can listen to understand a coast.

Research note: This guide uses museum, local tourism and government information checked on October 6, 2026. We have not visited in person.

How does a one-year hourglass work?

The museum describes Sunagoyomi as the world’s largest hourglass. Its container is 5.2 metres long and one metre across, but the nozzle is only 0.84 millimetres wide. The museum says the sand’s flow is computer-controlled. Official dimensions and mechanism

There is a useful detail to catch: the museum says the sand inside was selected from Iide, Yamagata Prefecture. Its purpose is connected to Kotogahama, but that does not make the hourglass a container of sand scooped from the local beach. Origin of the sand

Turning the year over takes a group of people

At the museum’s Toki no Saiten, or Festival of Time, participants pull ropes to reverse the hourglass at New Year. The museum describes a group of 108 people, drawn from people born in the incoming year’s zodiac sign and their family or other associates. A year ends with a physical act of turning the clock. Official festival explanation

This is not an open, walk-in New Year’s Eve visit. The notice for December 31, 2026 limits admission to selected participants and says there will be no outdoor fireworks event. It also warns that nearby public transport will have finished for the night. Check the dated event notice before planning around the ceremony; ordinary daytime admission does not secure a place.

Why does Kotogahama’s sand make a sound?

The sound is a short squeak, often rendered in Japanese as kyu-kyu. The museum explains it as friction between clean sand grains when a sudden force is applied. Quartz-rich sand, grain size and the condition of the grain surfaces matter; an ordinary sandy beach will not necessarily sound the same. The museum’s singing-sand Q&A

Kotogahama also has a story about that sound. In the local Kotohime legend, a princess played the koto to thank the villagers who sheltered her; after her death, the beach began to echo her music. It is a local legend, rather than the scientific explanation for the sound. Oda’s account of the legend

The museum’s conservation connection is practical. Oda’s tourism association explicitly asks visitors not to take sand home. Its itinerary explains that clean sand and suitable grain conditions help make the sound possible. Treat the beach as the place to listen, and leave the material that makes it work there. Official beach guidance

Conditions on the beach during your visit have not been checked for this guide. A description of singing sand is not a promise that every step will produce it.

Look beyond the giant clock

The museum has six glass pyramids and displays sand from Japan and other parts of the world, alongside works made with sand. Those are different ways of asking what the same familiar material can do. Oda’s museum overview

The sand display area includes microscopes for examining quartz sand and tiny shells. Ask what singing-sand guidance is available when you arrive; the Time Hall page describes regular explanations, but we have not verified an English-language timetable. Time Hall information

If seeing a natural resource used in an unexpected way appeals, Harie’s spring-fed household kabata offer another example, with carp taking a role in the water system.

Hours, admission and booking

The museum’s normal hours are 9:00–17:00, with reception closing at 16:30. It normally closes on Wednesdays, moving to the next weekday when Wednesday is a public holiday. New Year has additional closures and shorter hours. Check the operator’s visitor guide and closure calendar for your actual date.

The museum’s current published individual admission is:

Visitor	Published admission, including tax
High-school student or above	¥800
Elementary or junior-high-school student	¥400

These figures appear in both its visitor guide and its August 4, 2026 notice for an exhibition running September 5–December 20, 2026. They are the operator’s published admission prices; check the current guide before travelling. Museum’s visitor guide · Dated 2026 admission notice

Oda City’s April 1, 2026 fee revision lists higher figures of ¥1,000 and ¥500, but says designated operators set their fees within the stated limits. The city figures therefore do not, by themselves, establish the amount charged by the museum. We have not made a ticket purchase to test the charge at reception. City’s revision and qualification

The visitor guide reviewed does not state an advance-booking requirement for ordinary individual admission; we have not tested ticket purchase. Craft sessions have separate arrangements, so use the official glass-craft page if you want an activity as well as a museum visit.

The museum’s payment notice lists cash, credit cards, electronic money and QR payments for admission, while the rest-area till and basement workshop corner are cash-only. Specific overseas cards or payment apps have not been tested. Operator’s payment notice

Getting there: the museum and beach use different stations

For the museum, use Nima Station (仁万駅) on the JR San-in Line. The operator gives a walk of approximately 10 minutes from the station and warns that trains are infrequent. Check the outward and return connections before leaving Izumoshi. For drivers, its estimate from Nima–Iwami Ginzan Interchange is about three minutes. Museum access information

For Kotogahama, Oda’s tourism association lists approximately five minutes on foot from Maji Station (馬路駅). These are separate destinations, with separate station walks. Do not treat the museum’s ten-minute walk as access to the beach as well. Beach access information

The estimates come from the official pages, not our own timed walks. We have not verified a connecting train, bus, taxi fare or a step-free route for this outing. The museum lists parking near the entrance for visitors with mobility needs; contact it to arrange use and ask about the full route inside. Operator’s access provision

Photography

The museum’s 2021 photo guide encourages visitors to use cameras or smartphones and identifies a photo spot for the one-year hourglass at the central hall entrance. Check current signs and staff instructions, especially for temporary exhibitions. We did not find verified rules for commercial filming, flash or drones in the pages reviewed; ask before planning those uses. Operator’s photo guide

For another place that makes time and memory tangible, Awashima’s Missing Post Office collects letters without a deliverable address. Nima does it with a falling stream of sand: look closely at the clock, then leave time in the plan to listen to the coast that helped give it a purpose.