Tanzania: Kilimanjaro
Score: 59

"Some outfitters—mainly the priciest ones—are really making an effort to pay porters a fair wage, keep them in appropriate gear, and train them in safety techniques and in keeping the mountain clean—but they're still minimal."

"The impacts of climate change are obvious despite both the government's and community's improved commitment to ecological preservation of the site. Extensive programs to provide alternative routes to the mountain and increase local participation in the conservation of the site and provision of services."

"Excellent system of one-way control of trekkers. Very clean. There are projects with local communities, including schools, surrounding the park to reduce illegal use of natural resources and encourage pride in the World Heritage site and in sustainable development."

"The environmental and ecological quality was quite worrisome. Huge trash heaps littered the Machame route almost to the top. There was little concern by mountain guides on what to do with the trash."

Tanzania: Serengeti National Park and environs
Score: 61

"The wildlife in this park is perhaps the greatest concentration of mammals in the world. Nowhere else is the relationship between predator and prey so well displayed."

"One of the world's last great wilderness areas. Natural drought issues and increased visitation are taking a toll on the environment and the wildlife."

"Tourists often leave more than footprints behind. The National Parks Board is doing a fair job of controlling off-road driving. As more tourists visit the Serengeti, more revenue comes into the area, including to the Maasai. Money has a way of changing a culture."

"Not sure how much Maasai people are benefiting. Most visitors sucked into a tourist treadmill without much autonomy of where to spend money, since most trips are pre-paid."

"Tourism bush camps seem to be sensitive to the impact they have on the local environment."

Tanzania: Stone Town, Zanzibar
Score: 57

"Diamond in the rough. Absolutely remarkable heritage at the heart of Indian Ocean trade route."

"A living city—not just a relic of the past. The annual international film festival provides great community pride and brings in necessary funds to help continue development during the year."

"Conflicts between Muslim inhabitants and beach visitors over dress and behavior. Historical coral structures being replaced with poorly constructed new facades. Locals often own small hotels, but larger chains beginning to dominate."

"The narrow streets offer great photographic appeal. More instructional signs for visitors would be helpful."