Simplify the following text for a Grade 10 native English-speaking person.
Original: One building in which she plied her trade was The Majestic at 215 West 75th Street , designed by architects Schwartz and Gross and completed in 1924 with hidden stairways and secret doorways .
Simplified: One building she used was The Majestic at 215 West 75th Street , designed by architects Schwartz and Gross and completed in 1924 with hidden stairways and secret doorways .