The word “kremlin” in Russian means any medieval citadel in the center of an ancient Russian city, although it has come to be used to describe the seat of government (much as 'the White House' has in for the US). These fortresses were used to promote a rural settlement to urban status, but by the 18th and 19th centuries, they lost their strategic importance and many were torn down. Most of the surviving fortresses have now been turned into museums. There is an interesting (and brief!) history of some of these kremlins here. Although there are twelve kremlins in the set, I have only ten of these definitives.
Russian stamps is the timely theme for Sunday Stamps this week.
from left to right, with one interesting fact about each.....
Zaraisk Kremlin is the smallest with only 6 towers
Kazan' Kremlin is in Tatarstan, built at the behest of Ivan the Terrible
Kolomna Kremlin once had 17 towers and 3 gates (only 7 of the towers are still standing)
Nizhniy Novgorod Kremlin is in the former city of Gorky
Pskov Kremlin is located in one of the oldest cities in Russia, a mere 20km (12mi) from the Estonian border
Moscow Kremlin is built on a site that has been continuously inhabited since 2BC
Ryazan Kremlin is unwalled and may have been founded in 800