Are ema found only at Shinto shrines?
No. Buddhist temples also receive and preserve ema.
Must an ema ask for something?
No. It can also give thanks after a wish has been fulfilled.
Why does the name include “horse”?
The practice is linked to horse offerings, later also expressed through models and painted horse boards.
What does the ancient plaque from Iba show?
A horse drawn on a wooden plaque with a hole for a cord. The museum dates it to the Nara–Heian periods; it is not evidence of a single invention date.
Must an ema depict a horse?
No. Subjects expanded to other animals, people, stories and many modern designs.
Were large ema always given by groups?
No. An individual donor could commission a large painting.
What is a sangaku?
A votive tablet presenting mathematical problems or solutions.
Why did some Sensō-ji ema survive the 1945 destruction?
They had been removed from the main hall during repairs in 1933.
Must you put an address or private details on a wish plaque?
No. Follow local guidance and remember that others may read it.
Should every souvenir ema be hung at a shrine?
No. Some commemorative small ema are intended for collecting.