curious

adjective

• Tending to ask questions, or to want to explore or investigate; inquisitive; (with a negative connotation) nosy, prying.

  "Young children are naturally curious about the world and everything in it."

• Caused by curiosity.
• Leading one to ask questions about; somewhat odd, out of the ordinary, or unusual.

  "The platypus is a curious creature, with fur like a mammal and a beak like a bird."

• Careful, fastidious, particular; (specifically) demanding a high standard of excellence, difficult to satisfy.
• Carefully or artfully constructed; made with great elegance or skill.