Omkareshwar Temple is the reason the town exists for most visitors. The shrine stands on Mandhata island above the Narmada, reached through a knot of lanes, stalls, steps, and pilgrim traffic.
The visit is more devotional than architectural, especially when crowds are heavy. Come early if you want a calmer darshan, and keep your expectations practical: queues, security, and temple routines matter as much as the building.