The Greeks built their cities around a high acropolis because if some other country was attaking they could be safe and fight of the war from the inside.
The rocks used to build the temples of Angkor were close to this city. They found in the hills of the Kulen Hills.
Sonagiri is about 60 km from Gwalior, has scores of Jain temples of 9th & 10th century on little hills.
I would go mining in Extreme Hills biomes, or try to find Desert temples, jungle temples, and villages and they may have some there.
The Khajuraho temples are primarily constructed from sandstone, which was quarried from the nearby hills. This fine-grained stone allows for intricate carvings and detailed sculptures, showcasing the artistic skill of the period. Some temples also incorporate granite and other materials, but sandstone remains the predominant building material, contributing to the temples' aesthetic and structural integrity.
On top of Hills or throughout the city where it can be noticed the most.
They used a hill for a fortress (acropolis acro = topmost, polis = city) in the middle of their farming land, on which they could take refuge when invaders came along. Then a city would build up around the fortress and often walls around the buildings to protect them too.
The Parthenon is surrounded by the Acropolis, a rocky outcrop that features several other ancient structures and temples. It is located in Athens, Greece, and is bordered by the remains of the ancient city. The site is also surrounded by the modern city of Athens, which provides a contrasting backdrop to the historic monument. Additionally, the Parthenon is framed by a panoramic view of the surrounding hills and the cityscape below.
It is the hills that force road-builders to go round to avoid very steep slopes.
On hills or mounds
they usually cut into the sides of the hills
No, the Athenians had been waiting in the hills for them to arrive, when they saw the Persian cavalry being loaded on ships, and seized the opportunity to run down and defeat the inferior Persian infantry unprotected by its cavalry. When the Spartans arrived, they inspected the battlefield, congratulated the Athenians and went home.
Originally Rome was on the seven hills of Rome (the Capitoline, Palatine, Quirinal, Viminal, Esquiline, Caelian and Aventine. Over time the city expanded beyond this area and come to include other hills, such as the Pincian, the Janiculum and the Vatican.