The Church of Jesus Christ of Latter-Day Saints, or LDS, maintains a list on its website of all temples in the world. The site indicates how many are currently operating, under renovation, being built and announced.
Data on the LDS site gives each temple's full name, location and date of dedication. Clicking on the name of a specific temple leads to another page, featuring a photo of the temple, significant milestones in the life of the facility, its address, a map of its location and driving directions, the temple's telephone and fax numbers, schedules for all endowment sessions and baptistry times, closures planned for the next two calendar years and special sessions. The page also includes information about scheduling group visits, living endowments, marriages and sealings.
The website LDSChurchTemples.com has a list of the founding temples of the movement, referred to as "Temples of the Restoration," and a chronological listing of their establishment; a list of all temples currently operating worldwide; information about temples under construction, announced or proposed; and a list of temples that have been suspended.
Wikipedia has an interactive page on LDS temples that allows users to zoom in and out on a world map, search by temple status.