Denver Art Museum, Denver, Colorado
Though this museum, housing more than 68,000 works of art from around the world, was founded at the end of the 19th century, the faceted Frederic C. Hamilton Building brings the organization to the forefront of modern architecture. The new wing consists of a geometric titanium façade that flares out in "petals" from the center, mimicking a flower, with an enclosed bridge that links it to the rest of the space. For more information, visit .
Museum Brandhorst, Munich, Germany
Housing both 20th-century and contemporary art, the Museum Brandhorst, designed by Sauerbruch Hutton Architects, has an exterior designed to draw attention. The architects behind the building aimed to turn the façade itself into a piece of modern art. The exterior is covered with 36,000 separate ceramic rods glazed in 23 colors and attached vertically around the space. By working in groups of dark, medium and light color tones, the architects designed a building that seems to actually consist of three separate structures. The museum opened in May 2009. For more information, visit .
Kalkin House, Vermont
This prefab space was designed by architect Adam Kalkin and built from three transoceanic shipping containers surrounded by a 20-by-80-foot metal structure traditionally reserved for warehouses. Legendary decorator Albert Hadley collaborated on the gallery's design, adding features such as oversize glass garage doors, metal balconies and a breathtaking, two-story outdoor curtain to create an open patio space. Since 2001, the house has held special collections and exhibits as an extension of Vermont's Shelburne Museum. In its current exhibit, which runs until October 25, 2009, New York textiles designer Richard Saja has turned the space into a 19th-century saloon. For more information, visit .
Musée des Graffitis, Niaux, France
Without a striking building to commemorate it, visitors would never know this cave was anything more than a hole in the mountain. In fact, the Musée des Graffitis houses cave paintings dating back to 11,000 B.C. This majestic steel structure was designed by architect Massimiliano Fuksas to resemble a prehistoric animal emerging from the cave with the goal of luring visitors into the art-filled grotto. For more information, visit .
Ljubljana City Museum, Ljubljana, Slovenia
This unique addition to the Auersperg Palace is actually a spiral structure that unites several disjointed buildings of the royal complex and was built to improve the museum's navigability. The spiral walkway, which ascends from 10 feet beneath the ground, leads visitors to a lobby and eventually up to the other halls of the museum. Surrounded by glass, the ground-floor lobby, seen here, adds a gorgeous modern element to the beautifully preserved historical space. For more information, visit .
Danfoss Universe, Nordborg, Denmark
Part of Denmark's interactive science park Danfoss Universe, Cumulus is an exhibition space for new digital technologies and multimedia projects. The 10,000-square-foot modern building was designed by J. Mayer H. Architects to look like a massive cloud. For more information, visit .
Mint Museum of Toys, Singapore
Something for the kid in all of us, this toy museum features collectible dolls and figures from more than 40 countries all over the world. Designed by SCDA Architects to allow a minimal amount of light inside so as not to fade or damage the well-preserved toys, the glass façade is made up of 26 curved-edge panels. The effect is not only practical, it also makes an unforgettable first impression. For more information, visit .
Porsche Museum, Stuttgart, Germany
Located in the home of the German sports car, the Porsche Museum allows everyone to drool over some of the most coveted vehicles in the world. But whether or not you're a car-lover, the architecture here is enough to make anyone swoon. The steel and concrete structure, designed by Austrian firm Delugan Meissi Associated Architects, seems to slice through thin air, mimicking the speed and agility of the cars themselves. For more information, visit .
Tate Modern 2, London, England
Legendary Swiss architecture firm Herzog & de Meuron has designed a new addition to the equally renowned Tate Modern that is scheduled to open in tandem with the 2012 Olympic Games. The glorious new building will form a graphic new vertical addition to the flatter existing structure; it also includes a set of horizontal terraces to break up the façade of intricate, latticelike brickwork. We can't wait. For more information, visit .
Underwater Museum, Egypt
Rather than bring fragile sunken artifacts up to the museumgoer, architect Jacques Rougerie plans to bring the visitor down to them. Set in the Bay of Alexandria, this cutting-edge structure will consist of four columns shaped like sails and a series of fiberglass tunnels that will take visitors below the water to see shipwrecks and other ruins believed to be from the Lighthouse of Alexandria, one of the seven wonders of the ancient world. The first underwater museum is projected to open in 2013 but faces technical and feasibility issues. We'll be keeping our fingers crossed until then. For more information, visit .