Look closely. See how these 5 projects play on optical illusions to keep you guessing and wow people passing by.
Cira Centre
Year of Construction: 2005
Formerly a parking deck situated over Philadelphia's rail lines, the Cira Centre is a 29-story high-rise, standing 437 feet tall. The exterior of the skyscraper is a glass curtain wall, allowing it to reflect the sky and surrounding city. Inside, the building is home to numerous offices and both retail and restaurant spaces.
Mind Your Step
Year of Completion: 2011
Although this is not a building, Mind Your Step is still a notable work of optical illusion. Located in Stockholm's famous Sergels torg, the large scale print gives the impression of there being a massive hole in the ground. Many street illusions are simply created through drawings, but Erik Johnson took a more realistic approach by using photography instead.
Warrnambool Campus Building
Year of Completion: 2010
Glazed, hexagonal apertures make up the facade of this Australian college campus building, with each tilted down toward the street. Each aperture is composed of a steel structure finished with zinc, allowing them to provide shading from the sun and ventilation. The building stands three stories tall, and accommodates a variety of student services.
The Pinnacle at Symphony Place
Year of Completion: 2009
Standing as a 29-story office and retail structure in Nashville, Tennessee, The Pinnacle is home to several of the local, notable businesses and law firms. It is Nashville's first LEED-certified tower, featuring a one-acre rooftop garden, as well as numerous other green amenities.
Mirrorcube
Year of Completion: 2011
Standing deep in the forest of northern Sweden, the mirrorcube is a hotel that sits among the treetops. As a 4x4x4 structure, the base is an aluminium frame around a tree trunk, and each of the walls are covered with reflective glass.
The interior is made from plywood with a birch surface, and six windows provide a stunning panoramic view. The Mirrorcube offers excellent accommodation for two people with a double bed, bathroom, lounge, and rooftop terrace. A 12-meter-long bridge leads up to the tree room.
The Mirrorcube Treehotel