Neuschwanstein Castle

The palace was equipped with some of the latest technological innovations of the late 19th century.

An excerpt from the article 28 facts about Neuschwanstein Castle

These included a battery-powered bell and telephone lines. The kitchen was equipped with Rumford's stove, which used its heat to rotate the meat being roasted, automatically adjusting the speed of rotation.

Hot air was used in the central heating system with masonry radiators. Other innovations of the time included hot running water and automatic flushing toilets.