Kandor (comics)

Kandor (commonly known as the Bottle City of Kandor) is a fictional city spared from the doomed world of Krypton in DC Comics' Superman titles. Before Krypton exploded, the futuristic city was captured by the supervillain Brainiac, miniaturized by his shrinking ray and placed inside a glass bell jar. Defeating Brainiac and taking possession of the jar, Superman brings the city to his Arctic hideout, the Fortress of Solitude, and spends many years attempting to restore it to normal size.