SKYDB Building database
Tall buildings worldwide, with heights, construction status and the companies involved.
Rankings of tall buildings
Tall Building Markets
SKYDB Membership
Create a free account, choose Premium or apply to contribute as a volunteering Editor.
Choose your access
SKYDB Community
SKYDB Products
Professional building research, data exports and API access, plus advertising offerings.
Research & data
Consulting & advertising
Tall buildings, tracked.
SKYDB is collecting verifiable information about buildings.
About SKYDB
Using SKYDB
Interactive building map
Explore all projects on an interactive map anywhere on earth.
Free map access
Upgrade your map experience
Rankings of tall buildings
World’s tallest skyscrapersTallest under constructionTallest planned buildingsBiggest citiesBiggest countriesTall Building Markets
Global building statisticsBiggest cities worldwideCountry market overviewsConstruction activityAnnual completionsTall buildings worldwide, with heights, construction status and the companies involved.
View award winners
Choose your access
Create a free accountPremium membership benefitsBecome a volunteering EditorMembership questionsSign in to your accountSKYDB Community
About the communityMeet the EditorsHow to add contentSubmission guideCreate a free account, choose Premium or apply to contribute as a volunteering Editor.
Compare memberships
Research & data
Research with SKYDB InsightsData ExportsAPI AccessCreditsInteractive building mapConsulting & advertising
ConsultingSKYDB BrandingBanner advertisingContact SKYDBInsights questions & answersProfessional building research, data exports and API access, plus advertising offerings.
View Insights plans
About SKYDB
Who we areTeam and editorsSKYDB AwardsNewsletterContactUsing SKYDB
Coverage and focusSources and qualityHow to add contentDefinitions and standardsKnowledge baseSKYDB is collecting verifiable information about buildings.
Free map access
Locate individual buildingsView building factsFind places & addressesHow to use the mapJoin SKYDBUpgrade your map experience
Filter by height, use and statusDisplay city and district boundariesControl map layers and pin stylesEdit pinpoints and building footprintsMembershipsExplore all projects on an interactive map anywhere on earth.
Connected to Illinois State Prison in Alton
2,048 × 1,535 px·1.88 MB·JPEG·862-425-537
Keywords Illinois State PrisonAltonIllinois
