All the links below open pretty quickly.

Agenda 21:

This global contract binds governments around the world to the UN plan for changing the ways we live, eat, learn, and communicate - all under the noble banner of saving the earth. Its regulations would severely limit water, electricity, and transportation - even deny human access to our most treasured wilderness areas. If implemented, it would manage and monitor all lands and people. No one would be free from the watchful eye of the new global tracking and information system.

Chapter 28 of Agenda 21 specifically calls for each community to formulate its own Local Agenda 21:

Each local authority should enter into a dialogue with its citizens, local organizations, and private enterprises and adopt 'a local Agenda 21.' Through consultation and consensus-building, local authorities would learn from citizens and from local, civic, community, business and industrial organizations and acquire the information needed for formulating the best strategies. (Agenda 21, Chapter 28, sec 1,3.)

This tactic may sound reasonable until you realize that the dedicated "Stakeholder Group" that organizes and oversees local transformation is not elected by the public. And the people selected to represent the "citizens" in your community will not present your interests. The chosen "partners", professional staff, and working groups are implementing a new system of governance without asking your opinion.

http://www.crossroad.to/text/articles/la21_198.html

The below from a site about the Wildlands Project (part of Agenda 21). Click on the top link, "Wildlands Project" for a map of what is targeted for restriction of use. I'm in a red zone:

http://propertyrights.org/headline2_frame.asp

Another program below. It adds a handful of new "Biosphere Reserves" each year. The "buffer" around each zone is 150 miles, as I recall:

http://www2.unesco.org/mab/br/brdir/europe-n/USAmap.htm

The "World Heritage" project:

What do the Statue of Liberty and a tropical rainforest in Australia have in common? What links the Grand Canyon and Yosemite to Stonehenge, the Great Pyramids, Machu Pichu, and Auschwitz Concentration Camp?

All these, along with hundreds of other scenic and cultural treasures around the world, have come under the "protection" of UNESCO through the World Heritage Convention. Signed by former President Nixon in 1973, this treaty gives the United Nations authority to guide the safe-keeping of international sites and monuments "considered to be of such exceptional interest and such universal value that their protection is the responsibility of all humanity." 1

What if some Heritage lands are privately owned?

It doesn't matter. In the eyes of UNESCO, private owners can't be trusted to guard "a World Heritage which belongs to all humanity"2 any more than parents can be trusted to raise their own children. The rights of the global collective must replace the old Western individual rights. To persuade the public, a new revolutionary way of thinking -- often called holistic, integrated, or "systems thinking" -- must replace the contrary old Western thoughts and ways.

http://www.crossroad.to/text/articles/whpwans97.html

Below is a link to various biological treaties. Just some of them. All of them will be Private property-infringing, by their very nature:

http://sedac.ciesin.org/entri/TextsToc.jsp

Then on top of the land grabbing by the environmentalists just barely outlined above, we in Texas have to contend with the private investors who are being given ownership of the roads our taxes built. So it's the environmentalists grabbing land on the one hand, or the developers grabbing land on the other.

And yes, the Kelo Decision paved the way for private investors to start stealing privately owned land. The most stunning Supreme Court decision in modern history.