Why was ancient roman architecture so important?

Modern

architecture is no longer influenced by the Romans much. It was

until the early to mid-20th century. Successions of European

architectural styles were influenced by Roman architecture:

Renaissance (15th and 16th centuries) Baroque (17th to early 18th

centuries), Rococo (18th century) and Neoclassicism (late 18th to

20th century). These styles were popular for public buildings,

palaces, mansions and town houses for the rich and well-to-do. The

Neoclassical style is still sometimes used.