Old water towers are so interesting. (Abandoned water tower in the Polish village of Lubne, Lesko County. It serviced the village until the when it was converted into a home. It's been abandoned for many years now.
Explore the Three Story Treehouse! This is an attraction in British Columbia’s Enchanted Forest Theme Park. It includes fairy-tale characters and nature walks, but the highlight of the park is clearly the treehouse.
Top 10 Strangest Buildings in the World - Stone House, Portugal. Located in the Fafe mountains of northern Portugal, A Casa do Penedo, or "the House of Stone," was built between four large boulders found on the site.