See inside: The most expensive house in Denver listed at $21.5M

The Polo Club architectural gem is on 6.5 acres, the largest residential estate in the city.

Why it matters: This is Denver's most expensive house on record. The current most expensive house sold in March 2020 for $16M, according to BusinessDen.

The exact address is 9 Polo Club Lane. At 9,446 square feet, it has 6 beds and 6 baths.

Details: The house was designed in Modern Prairie-style architecture. On the outside, you'll see wood paneling, sandstone and copper accents, and interesting rooflines and overhangs.

• The interior features tons of natural light, a spacious family room divided by a fireplace and chef's kitchen.

Luxury touches: Home gym with with a steam shower, spacious living/entertaining spaces, two libraries, house manager's study.

Outdoor space: There are multiple terraces and outdoor living spaces, along with tranquil gardens, a pool, fireplace and temperature-controlled greenhouse.

Listed by: Josh Behr and Linda Behr at LIV Sotheby's International Realty.

Take a look around.

All photos are courtesy of LIV Sotheby's International Realty.