Colonizing Indonesia for hundreds of years, including Yogyakarta, Dutch left some historical buildings with European-style architecture which you can enjoy it's beauty.
YogYES.com (www.yogyes.com) An exceptional website, full of rich content about the city and its culture, with numerous tips for travellers. ~ Lonely Planet
Visit Yogyakarta, http://www.yogyes.com/, is an extremely useful English-language Web site. ~ The Washington Post