The Oman Natural History Museum is a compact but useful stop for understanding the landscapes outside Muscat. Its displays cover geology, fossils, marine life, desert species, and the adaptations that let plants and animals survive in Oman's dry mountains and coasts.
It is not as visually striking as Muscat's forts or mosques, but it adds context before a trip into wadis, beaches, or the interior. Families and natural-history-minded travellers will get the most from it.