Structures
get information about a building
Eiffel Tower
compare several buildings
Empire State Building, Chrysler Building
do computations with building properties
height CN Tower / Merchandise Mart
get information about a bridge
Golden Gate Bridge
compare several bridges
Bosphorus Bridge, Forth Road Bridge
do computations with bridge properties
length George Washington Bridge / Brooklyn Bridge
get information about a tunnel
Laerdal tunnel
compare several tunnels
Moffat tunnel, Riola tunnel, Otai tunnel
do computations with tunnel properties
length Seikan tunnel / Aki tunnel
get information about a dam
La Esmeralda Dam
compare several dams
Grand Coulee Dam, Glen Canyon Dam, Mica Dam
do computations with dam properties
length Three Gorges Dam / Hoover Dam
get information about a castle
Krak des Chevaliers
compare several castles
Blarney Castle, Castillo de Cox, Egeskov
find castles with specified characteristics
castles in the UK
get information about an oil rig
deepwater horizon
find oil rigs in an area
Oil Rigs in the Gulf of Mexico
do calculations with oil rig data
rated water depth of deepwater horizon / depth of the gulf of mexico
get information about a US mine
alton pit
find US mines with specified properties