"The construction sector should set up world-class structures...And build many other structures that could contribute to improving the people's living conditions," Kim said in a New Year message broadcast on state TV.
He praised soldiers and builders for setting up "numerous monumental structures" including the Masik Pass Ski Resort in a short period.
State media said the ski resort opened yesterday and Kim visited to mark its completion, taking a ride on a ski lift. Thousands of North Korean soldiers had been mobilised to complete it by the end of last year.
Featuring 110 kilometres of multi-level ski runs, a hotel, heliport and cable cars, the resort has been heavily promoted since Kim visited it in June and called for construction to be completed by the end of the year.
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"This year, too, the service personnel and people should make concerted efforts to build up Pyongyang so that it is more grandiose," Kim said.
The young leader has shown a fondness for expensive, high-profile leisure projects in and around the showpiece capital Pyongyang including a massive new water park, an amusement park and a luxury horseback riding club.
Kim in September also watched films at a new "4D" movie theatre built in the newly-renovated Rungna People's amusement park, state media reported earlier.
He was photographed riding a roller coaster in the Rungna amusement park in Pyongyang when it reopened in July 2012 after renovations ordered by Kim.