There are two next generation 3D city models of Helsinki available: a semantic city information model and a visually high-quality reality mesh model.
You can view the 3D city model and download its information at http://kartta.hel.fi/3d/ . You can find more information here https://www.hel.fi/helsinki/en/administration/information/general/3d/ .
The city information model
The city information model allows users to perform a variety of analyses focusing on energy consumption, greenhouse gases or the environmental impacts of traffic, for example.
The city information model includes a terrain model and buildings. Buildings are presented in two formats: flat-roofed (LoD1) and with differentiated roof structures (LoD2). The LoD2 buildings are also available textured. The buildings are all semantic CityGML objects. Each building has its own identifier (GMLID, RATU and VTJ-PRT) in the database, allowing data streams to be combined. The model uses the ETRS-GK25 plane coordinate system and the N2000 height system. The accuracy of the city information model corresponds to the accuracy of the city plan base map, meaning that buildings are located exactly where they are in the city plan’s base map.
The city information model
- licensed under CC BY 4.0
- online service platform Cesium
- database postgreSQL / postGIS
- database schema 3DCityDB
- data model CityGML 2.0
You can choose the area that you wish to download data for in the data download service. You can also choose your preferred file format and whether to download textured or untextured data. Building property data is not included.
Go to the download service https://kartta.hel.fi/3d/
You can also download the data directly as CityGML files, which are divided into map sheets covering four square kilometres each. The files include building property data.
Go to CityGML data http://3d.hel.ninja/data/citygml/
Helsinki Energy and Climate Atlas
City of Helsinki compiles all energy-related data on its building stock into a 3D map application labeled Helsinki Energy and Climate Atlas https://kartta.hel.fi/3d/atlas. Executed on the CityGML data model, the semantic 3D city model of Helsinki is part of the city’s toolkit for climate action and climate change adaptation.
The Energy and Climate Atlas is based on the city information model. It contains plenty of building-specific basic information, energy and repair data, as well as data on the consumption of water, district heating and electricity. The Atlas shows you an approximate energy consumption estimate for nearly every building in Helsinki.
The data is available as open data as an excel file and the metadata of the file is available here http://www.hel.fi/hel2/tietokeskus/data/dokumentit/data_atlas.pdf (in Finnish).
The model also includes calculations of the solar energy potential of all roof and wall surfaces in Helsinki, i.e. how much solar radiation energy surfaces receive per year and per month. All in all, the model includes information on nearly a million surfaces. View the Solar Energy Potential model https://kartta.hel.fi/3d/solar/.
Reality mesh of entire Helsinki (2017)
The reality mesh model is a photorealistic city model that, according to its name, it is a visually high-quality and geometrically accurate model based on aerial photographs. The model has the advantage of being realistic: the model includes all the items that were stationary at the time of photography, such as small structures, trees and parked cars. These city-wide mesh models have been produced aerial photographs taken at summer 2017 and 2015. The 2017 model has been produced with over 42,000 aerial photographs with a ground sample distance of about 7.5 cm / pixel. You can download the model in OBJ format, which contains each level of detail, and the LoD type is adaptive tree. View the index map of the data here and corresponding file names here.
3MX / 3SM Files & ContextCapture Viewer
The 3MX and 3SM file formats can be viewed with the CC Viewer, which can be downloaded for free after registration. The 3SM file format can also be used in Bentley MicroStation CE version generation software as a reference file/background map.
Reality mesh model of Kalasatama (2017)
The 3D model of Kalasatama area is based on aerial photographs taken in summer 2017. You can download the model in DAE, FBX, OBJ, 3D Tiles and 3MX/3SM formats. View the reality mesh model of Kalasatama with web browser https://kartta.hel.fi/3d/mesh/kalasatama. Find more information here.
Reality mesh model of entire Helsinki (2015)
The reality mesh model of entire Helsinki (2015) -model show the city of Helsinki in summer 2015. The 2015 model has been produced with over 50,000 aerial photographs with a ground sample distance of about 10 cm / pixel. You can download the model in OBJ format from a map view here. You can view the model here: https://kartta.hel.fi/3d/mesh. View the index map of the data here.
360 ° pictures and videos
The 2015 mesh model has been used for 360-degree images and videos. Both these pictures and videos can be downloaded from this service. In the 360-degree view, the viewer can watch anywhere. In 360-degree video, the viewer can turn their viewing angles in any direction and actually affect what the viewer sees during the video. Photos and videos work at least on Samsung Gear VR virtual glasses.
Munkkiniemi-Haaga 1915 mesh model
The miniature model of Eliel Saarinen’s Munkkiniemi-Haaga plan from 1915 has been converted into a virtual model. The data of virtual model is available in OBJ file format. Each level of detail is included separately in the data. The virtual model is georeferenced to the ETRS-GK25 level coordinate system and the N2000 elevation system. The origin of OBJ files can be found at x=25490000, y=6668000, and z=0. Pictures of the model and its production can be viewed here. Though it was never implemented, the plan can now be easily viewed by anyone at https://kartta.hel.fi/3d/mesh.