A temple is a place of worship and may be architecturally old or active today. A stupa is a Buddhist commemorative monument; a monastery or vihara is a different building type. A fort is a defended settlement or military complex, although later buildings inside it can have religious or residential roles. A cave may be a natural landform such as Belum or Borra, or a human-excavated rock-cut monument such as Undavalli. A photograph of an entrance arch alone rarely reveals which type the whole site belongs to.
Classification controls the answer. Gandikota combines fort remains with the natural Penna gorge. Amaravati contains stupa remains and a Shiva shrine in the same broad town, so “Amaravati—Buddhist site” and “Amaravati—Amareswara temple” can both be correct in different questions. A conservation rule may apply to one monument while ordinary local governance applies nearby. Check whether the question asks for geology, dynasty, deity, river or legal protection before choosing a place.
Worked example: Classify four photographs before naming places: a mound with relic architecture may be a stupa; an active shrine is a temple; walls and bastions suggest a fort; and a chamber may be a cave. A natural cave and an excavated cave differ in formation. After deciding physical type, add location and legal status as separate facts. One photograph seldom proves all three.
Active recall: Contrast Belum Caves and Undavalli Caves by formation. Why can one AP town have two different heritage labels?