Museums from all over the world are offering amazing Virtual Tours! Check some of them out here:

• Best in Singapore's awesome options for the 10 Best Museums in Singapore
• The Louvre (Paris, France)
• Smithsonian National Museum of Natural History (Washington D.C.)
• Van Gogh Museum (Amsterdam, Netherlands)
• The Vatican Virtual Tours (includes the Sistine Chapel, Niccoline Chapel, and Chiaramonti Museum) 
• The MoMA (New York City, NY)
• Check out a list of even more HERE!