Designed by Peter Cook and Colin Fournier, the Kunsthaus (art museum) is a unique expression of art in architectural form, right in the heart of the city's historic center. The façade of the Kunsthaus museum is a blend of architecture and new media: it consists of approximately one thousand acrylic panels, illuminated by 40 Watt fluorescent rings, the brightness of which can be controlled by a central computer. The interior of the building is very modern and functional.

Situated on Sackstrasse, the City Museum is one of the most famous museums of Graz. It chronicles the city's history, as well as features photo exhibitions by such talented artists as Marcel Reich-Ranicki, Theodore Kollek, Erich Fried and Sir Karl Popper. The museum is open every day, except Mondays.

The Museum of the Castle Garrison is one of the city’s largest and it provides a great opportunity to explore the military history of Graz, the site of many battles and sieges, from the middle ages through the Napoleonic wars. Its military exhibits include an extensive collection of Austrian uniforms. The museum is open Tuesday through Sunday from 11:30 am until 4:30 pm.

Established in 1913 by Viktor von Geramb, the Styrian Folklore Museum is situated in a former Capuchin monastery on Paulustorgasse. The museum possesses large collections of household objects, farm equipment, traditional clothing, and exhibits on rural living. The Styrian Folklore Museum is also the location of the famous "Rauchstube."

This Museum was established by criminologist Hans Gross at the University of Graz in 1912. At the time of its opening, the Criminological Museum was the only one of its kind. Gross is regarded as a founder of scientific criminology and this museum was the apogee of his efforts to establish criminology as an academic subject. Visitors can see some 3000 objects related to over 1000 criminal cases.

The Diocese Museum invites its visitors to explore the history of and the present situation in Christianity. This museum's permanent collections contain many beautiful sacred artifacts. The Diocese Museum also organizes special education programs for children on regular basis.

Situated along Herrengasse, Landeszeughaus features one of the world’s largest collections of helmets, guns, two-handed swords, bullet tongs, pistols, and various other weapons, from many different periods. This well known armory was built Anotnio Solar in the seventeenth century. Its collection numbers over 32,000 objects.