Hofburg Imperial Palace is an elegant monstrosity of Baroque architecture where you could spend all day getting lost in the museum and then even more lost on the palace grounds.
The complex is so big that you may find yourself asking, “Why do rich people do this? They couldn’t have just had a normal sized palace with one building and common sense hallways?” One of the most celebrated sights at the palace is the Sisi Museum, where you can view famous portraits of legend-inspiring Empress Elisabeth. The museum is by no means the only attraction on the grounds, though: check out the state hall of the Austrian National Library, the largest Baroque library in Europe.
Michaelerkuppel; www.hofburg-wien.at; open daily Sept-June 9am-5:30pm, July-Aug 9am-6pm
Prices vary by attraction; tours of Sisi Museum and Imperial Apartments €16.90, €15.90 students; tours of Sisi Museum and Imperial Apartments daily 2pm; last entry 30min. before closing; wheelchair accessible