Vienna's Imperial Palace is one of the biggest palace complexes in the world. The oldest parts date to the 13th century, with construction having continued right into the 20th century. The Imperial Palace was the residence and seat of government of the Habsburg emperors until 1918. Today, it is home to numerous museums with outstanding collections, the Spanish Riding School, a congress center, the seat of the Austrian Federal President as well as the historic Heldenplatz.

Constructed in 1275, the extensive Imperial Palace was the fortress of the Habsburg monarchs, who ruled over Austria - for over six centuries, from 1276 until 1918. This court palace is a major crowd puller monument today, with the incredible museums, Winterreitschule, chapel, royal apartments, a library and the church, which are housed in the palace. This huge complex is constructed in diverse architectural styles from Neo-classic to Gothic and Baroque.