1.   During an impromptu tour, stories about the city and its women spill out of Swift with enthusiasm.

2.   It was a morning of discovery for the couple from Nevada, who found themselves taking an impromptu walking tour of a Parisian suburb.

3.   Request standard shuttle service, receive an impromptu downtown tour.

4.   Sometimes I gave impromptu tours of the garden to the guys who came by to fix stuff.

5.   We met King, the bilingual gorilla, at an impromptu tour of his new habitat.

6.   When it was first built, the tower could be seen from the street, and the curious could wander by for an impromptu tour.

7.   Still in jogging clothes, Clinton also took an impromptu tour of the famed Sydney Opera House, a white clam shell-like building on the harbor.

8.   Washington also got an impromptu aerial tour of Geneva, including a pass over the United Nations complex and the shooting water fountain in Lake Geneva in the city.