Much like wine, artworks (especially paintings) are best kept in stable environments. Only by creating this safe haven for your paintings and sculptures will you be able to preserve their quality and their value for the next generations.
If you are planning to grow a serious art collection, it may be wise to invest in a room with humidifiers. About 50% humidity and 70 degrees Fahrenheit is ideal. Variations in these temperature factors are okay, for as long as they are slow and never abrupt (the changes should be over a period of years or at least months). Sudden changes are harmful to your artworks.
If your collection is still small, though, then just keep your paintings away from sunlight. Just be sure that the wall you are hanging them on is not damp or recently plastered. Never hang a painting over a working fireplace. Never store a painting in an area subject to heat or dampness, such as a kitchen.
There are plenty of more tips here==>
