Who doesn't like to mix things up and try something new every now and then? I know plenty of people who love starting new projects such as building a book shelf, kitchen cabinets, or even a cool looking tree house. Check these out:

1) Free Spirit Sphere Tree Houses--Canada

boredpanda

2) Plane Tree House--Costa Rica

radiotimes

3) The Minister's Tree House--Tennessee 

geocaching

4) Tea House Tetsu--Japan

fastcodesign

5) UFO Tree House--Sweden

mashable

6) Tree House for Birds and People--Japan

fastcodesign

7) Senior Center Turned Tree House--Belgium

architizer

8) Yellow Tree House Restaurant--New Zealand

scoop

9) Three Story Tree House--Canada

eanswers

10) Mirror Tree House--Sweden

blogspot

11) The Birds' Nest--Sweden

infurn

12) The HemLoft Tree House--Canada

blogspot

13) Tree House in Muskoka--Canada

pinterest

14) Tree House by Takashi Kobayashi--Japan 

thene

15) Tree House Located in France

galleryhip

16) Too High Tea House--Japan

ounodesign

17) The Crazy House--Vietnam

terjenet

18) Beach Rock Tree House--Japan

insureandgo

19) Huntsville Botanical Garden Tree House--Alabama

aggiesforchrist

20) Hapuku Lodge Upper Branch Tree House--New Zealand

mashable