Hang Nga Guesthouse, Crazy House, Đà Lạt, Vietnam

To help alleviate the financial burden associated with what was essentially a personal project—having accumulated upwards of VND 30 million in debt—Nga expanded the building into a guesthouse, and opened the house to paid visits by tourists in late 1990. As of 2010, fees for visits to the guesthouse were VND 30,000 per visit; room rates ranged from VND 290,000 to 630,000 per room per night for Vietnamese, and from $29–63 for foreigners.
Reception
The five-story-high guesthouse has generated a great deal of attention and controversy since its inception, with reactions ranging from criticism and derision to open admiration. The house was dubbed the "Crazy House" by early visitors, a name which Dang soon adopted for the house herself.