Stone construction, round arches, and barrel vaults
Explanation:
This architectural style used elements of Roman architecture, reached its heyday between the 11th and 12th centuries.<u> The simple, arched, vaulted horizontal lines were supported by solid, thick walls and few windows. For the most part, this architectural style would represent humility, to the fact that this kind of building always tries to stay close to the ground, and its towers never reach high.</u> The Romanesque would evolve for the gothic style in later centuries.
This is an example of a vault, specifically a barrel vault. This type of construction is very stable because of its weight bearing capacity. Therefore the structure is likely to be long-lasting.