After three years of construction, passengers can now use three new stations on the southern M2 line.
Until the end of the month, visitors can see an exhibition about the reconstruction of Warsaw's Old Town at the capital's main square.
The city has finished the first stage of the Mokotów bike network. The route links metro stations with Szczęśliwiecki Park.
A food festival will take place by the Vistula next month, featuring local restaurants, a crafts market and cooking workshops.
From next week, the Grota-Roweckiego bridge will be open to alternating traffic. The works will last until autumn.
From July, library branches in Ursynów and Ochota will be open until 8 pm, with outdoor reading rooms and family events planned.