Roderick Hudson by Henry James

Rowland went often to the Coliseum; he never wearied of it. One morning, about a month after his return from Frascati, as he was strolling across the vast arena, he observed a young woman seated on one of the fragments of stone which are ranged along the line of the ancient parapet. It seemed to him that he had seen her before, but he was unable to localize her face. Passing her again, he perceived that one of the little red-legged French soldiers at that time on guard there had approached her and was gallantly making himself agreeable. She smiled brilliantly, and Rowland recognized the smile (it had always pleased him) of a certain comely Assunta, who sometimes opened the door for Mrs. Light's visitors. He wondered what she was doing alone in the Coliseum, and conjectured that Assunta had admirers as well as her young mistress, but that, being without the same domiciliary conveniencies, she was using this massive heritage of her Latin ancestors as a boudoir.

In other words, she had an appointment with her lover, who had better, from present appearances, be punctual. It was a long time since Rowland had ascended to the ruinous upper tiers of the great circus, and, as the day was radiant and the distant views promised to be particularly clear, he determined to give himself the pleasure. The custodian unlocked the great wooden wicket, and he climbed through the winding shafts, where the eager Roman crowds had billowed and trampled, not pausing till he reached the highest accessible point of the ruin. The views were as fine as he had supposed; the lights on the Sabine Mountains had never been more lovely.