Use the map application in a separate window or a separate WikiShootMe application to upload picture. Both work well with mobile.
According to the rules, the participating images must represent a listed cultural heritage site in Finland. This year the focus is on cityscapes, its buildings and sceneries. More and more sites from registries of the Finnish Heritage agency, and from municipalities, are brought to Wikidata. Choose one already in Wikidata on explore the registries directly.
Lists in Wikipedia
Ahvenanmaa • Etelä-Karjala • Etelä-Pohjanmaa • Etelä-Savo – Savonlinna • Kainuu • Kanta-Häme – Hämeenlinna • Keski-Pohjanmaa • Keski-Suomi • Kymenlaakso • Lappi – Rovaniemi • Pirkanmaa – Tampere • Pohjanmaa • Pohjois-Karjala • Pohjois-Pohjanmaa • Pohjois-Savo • Päijät-Häme • Satakunta – Pori – Rauma • Uusimaa – Helsinki • Varsinais-Suomi – Turku
Map applications maps.wikilovesmonuments.org and WikiShootMe.
The Finnish Heritage Agency registries
Kyppi.fi • Museoverkko map • Cultural heritage sites of national significance in Finland • Built heritage • UNESCO World Heritage sites in Finland.
Rephotography
Download Ajapaik app for Android. It helps you find nearby old photos to rephotograph.