Smithsonian Institution - one of our nation's treasures. Art, history, culture, nature; if you're interested, it's yours to learn.
Wolf Trap Foundation for the Performing Arts - a National Park dedicated to the performing arts. In the summer, performances are held in a beautiful open-air pavilion. In the winter, the artists perform in a small theater reconstructed from two 18th century New York barns.
Keukenhof Holland. There are many beautiful gardens in the world. For those who love tulips, though, there is only one. It is the Keukenhof, open for only a few precious weeks every spring.
Rijksmuseum - National Museum of The Netherlands. Among its one million art and history objects are 2,000 paintings from the Dutch Golden Age.
City Hall - Stockholm. Eight million red bricks were used in this beautiful building which is the venue of the Nobel Prize banquet.