Detailed Instructions: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Q: Of all buildings mentioned, which has the shortest height?, Context: The tallest building in Downtown Jacksonville's skyline is the Bank of America Tower, constructed in 1990 as the Barnett Center. It has a height of 617 ft (188 m) and includes 42 floors. Other notable structures include the 37-story Wells Fargo Center (with its distinctive flared base making it the defining building in the Jacksonville skyline), originally built in 1972-74 by the Independent Life and Accident Insurance Company, and the 28 floor Riverplace Tower which, when completed in 1967, was the tallest precast, post-tensioned concrete structure in the world.
A:
Riverplace Tower