When examining some of Pennsylvania's coolest buildings, Keystone Edge determined that five structures stood out from the rest of the pack.Whether it was the incorporation of cool technology like radiant heating or the aesthetic value of the exterior space, certain properties caught the eye of the Elise Vider, writing for the news outlet. The Emerald Art Glass House in Pittsburgh was selected for the list, due to its industrial themed exterior, its radiant-heated facade and views of the Monongahela River. The Edgar N. Putnam Event Pavilion in Doylestown was also selected, as the building that replaced the famous Bucks County Prison incorporates a number of unique features into the renovated space, according to Keystone Edge. "From the very beginning we thought that to truly celebrate the museum wall, and make the landscape more useful, a modest, transparent jewel box should be inserted in the garden," said James Timberlake, lead design partner for the project. "This singular act now brings this very special stone wall, which defines the museum, directly into the experience of the museum visitor."A straw-bale like house in Coatesville was also included on Vider's list, a building that achieved Leadership in Energy and Environmental Design (LEED) certification for its green design. A similarly green building, the Levitt Pavilion in Bethlehem, graced the list, as its architects were able to create an "origami-like" structure that is clad in stainless steel. Last on the list was the Onion Flats in Philadelphia, and these spaces were able to maximize on their green capabilities enough to claim a net-zero energy stamp.Technology like radiant heating systems not only help to limit the energy consumption of a structure, but they also allow a building owners to maximize the use of space by eliminating the need for bulky radiators and vents.