Places and Geography

Hmm.. quite a bit of information for this one.

Maps & Projections
Maps

Generate maps of a specified country
 * Argentina map

Generate a world map colored according to a given statistic
 * life expectancy

Projections

Draw a map using a specified projection
 * world Winkel Tripel projection
 * Europe Mercator projection
 * Australia equirectangular projection

Countries
Countries

Get information about a country
 * France

Specify a country using its UN code
 * country DJI

Specify a country using its internet code
 * .dk

Compare several countries
 * Norway, Sweden, Finland

Properties of Countries

Request a property of a country
 * Sudan population
 * life expectancy in New Zealand

Request a class of information about a country
 * Peru geography

Compare a property for several countries
 * television stations US, Canada, Mexico

Do computations with country properties
 * arable land area Spain + Portugal
 * Germany electricity consumption / population
 * GDP per capita Norway / United States

Groups of Countries

Specify a group of countries
 * European Union

Analyze properties of a group of countries
 * Europe life expectancy

Analyze correlations between properties
 * Africa population vs Africa GDP

Country Rankings

Rank countries
 * 5 largest countries by area
 * African country with highest life expectancy

Find countries meeting given criteria
 * countries with population > 125 million
 * European countries with unemployment < Denmark

Cities
Cities

Get information about a city
 * Buenos Aires
 * Springfield, MA

Compare several cities
 * New York, London, Tokyo

Properties of Cities

Request a property of a city
 * population Venice

Do computations with city properties
 * elevation Denver - Los Angeles

Do computations with city and country properties
 * population Madrid / population Spain

Geocoding
ZIP Codes

Locate a ZIP code
 * ZIP 60637

Telephone Codes

Find a location for a phone number
 * phone 217-398-0700

Find the international calling code for a country
 * Japan calling code

Identify an international calling code
 * country code 55

Airport Codes

Locate an airport and get information about it
 * Midway Airport

Specify an airport by its FAA code
 * LAX

Specify an airport by its ICAO code
 * CYYZ

GeoIP

Look up your IP address and estimate your location
 * Where am I?

Geodesy & Navigation
Latitude & Longitude

Locate a point on Earth using latitude-longitude coordinates
 * 55 deg 45' N, 37 deg 37' E

Find the coordinates of a city
 * Algiers coordinates

Distances

Compute the great-circle distance between points on the globe
 * 23.5S 46.4W to 56.8N 60.6E

Compute the distance between cities
 * San Francisco to Tokyo

Bearings

Get information about a compass heading
 * SSW
 * 15 North

Geodetic Data

Get information about a geodetic reference ellipsoid
 * GRS80

Compare multiple ellipsoids
 * Airy 1830, Modified Fischer 1960

Get information about a geodetic datum
 * GDA94

Compare multiple geodetic data
 * NAD27, ITRF00

Geogravity Compute current local gravitational field strength
 * geogravity

Compute gravitational field strength in a specified city
 * geogravity in Seattle

Compute gravitational field strength at specified coordinates
 * geogravity 21.28N 157.60W

Geomagnetism

Compute current local geomagnetic field strength
 * geomagnetism

Compute geomagnetic field strength for a given date and location
 * geomagnetism Oslo on 12 Feb 2007

Elevation Data
Find the elevation of a city
 * elevation Chicago

Get elevation data near specified coordinates
 * elevation around 46N 7E

Find minimum/maximum elevations for a country
 * Russia lowest point

Oceans
Get information about an ocean
 * Atlantic Ocean

Do computation with ocean properties
 * area Pacific Ocean / Atlantic Ocean

Get current tide information
 * tides Seattle

Lakes
Get information about a lake
 * Loch Ness

Compare several lakes
 * Great Salt Lake, Lake Winnipeg

Do computations with lake properties
 * surface area Lake Erie + Lake Huron + Lake Ontario

Can do these with rivers, mountains, and waterfalls as well.

Islands
Get information about an island
 * Hispaniola

Get information about a group of islands
 * Galapagos Islands

Do computations with island properties
 * area Martha's Vineyard / Nantucket

Parks
Get information about a park, monument, or historic site
 * Lincoln Memorial

Compare parks
 * Yellowstone National Park, Yosemite National Park