3. Ottensheimis a region in Austria. The location is known for Das Park Hotel. What makes the site so popular is its unusual feature. As a matter of fact, the hotel is made from what used to be sewer pipes. The construction is built on the banks of the Danube River. The view is quite utilitarian and extravagant. The walls of the tubes were painted by Thomas Latzel Ochoa, an Austrian artist. Thanks to his effort now the place looks more user-friendly and comfy.