Hello how may I help you? what's the tallest building in denver The tallest building in Denver is the Republis Plaza great, I need an office there Unfortunately, I can't help you in that regard, as I can only help you with city facts oh what's the subway system like in denver? There's an extensive subway and bus system that covers much of the Denver area. great A good majority of the surrounding area is accessible via this system awesome Let me know if you need any further assistance