In the modern times any city was affected.
The Santorini volcano is nearest to the city of Fira, which is the capital of the island of Santorini in Greece. Fira is located on the western side of the island and offers stunning views of the volcano and the Aegean Sea.
the volcano Mauna Kea is closest to the big island or Honolulu.
Iceland has only one city, so the answer is Reykjavík.
Afghanistan
The closest city near Hekla volcano in Iceland is Hvolsvöllur, located about 26 kilometers to the south.
The closest city to Newberry Volcano is Bend, Oregon. It is located approximately 20 miles to the northwest of the volcano. Bend is a popular destination for outdoor enthusiasts and visitors exploring the Central Oregon region.
Sabancaya Volcano is located in the southern Peruvian Andes.The closest town is Chivay,capital of the Caylloma province in the Arequipa region.
No volcano has ever destroyed Vatican City.
Erta Ale Volcano(Ethiopia)
The nearest toown is Nanae, part of the town is 'Onuma' followed by Mori. The nearest big cities are 'Hokuto shi' and 'Hakodate'.
The closest city to Mauna Loa volcano in Hawaii is Hilo. It is located on the eastern side of the Big Island of Hawaii.
The volcano Eyjafjallajökull is closest to the town of Vik í Myrdal in Iceland. It is located about 20 kilometers (12 miles) to the northwest of Vik. The volcano gained international attention during its 2010 eruption, which disrupted air travel across Europe.