This Canadian stamp was issued in 2010, commemorating the 2010 Olympic and Paralympic Winter Games. It shows a night view of the city of Vancouver. (More about this issue.)
And this Spanish stamp is another commemorative: of the 5th Centenary of the birth of Teresa of Ávila. The stamp show a detail of the sculpture The Ecstasy of St. Teresa, by Gian Lorenzo Bernini and, on the background, a night view of the walls of Àvila.
(A second post with fireworks on stamps.)