There are 805 entries of Architectural Oddities in the Atlas

Possibly our broadest category, it includes among other things: Eccentric and unusual homes, mazes, bizarre ruins, amazing outsider architecture and other strange buildings built by non-architects, the architectural follies of Princes and millionaires, gorgeous and unusual libraries, building and bridges grown from living trees, secret passageways, secret lairs, caves, caverns and buried treasure hordes. Basically any building, structure, house, church, tunnel, that stops you in your tracks because it is unusual looking, has a bizarre back story, or curious method of creation belongs in architectural oddities. From ancient and mysterious ruins in South America to a Buddhist temple made of beer bottles, to a beautiful solar tower in Spain they all fall under the category of architectural oddities.