Observatory Park

Observatory Park isn't one of Denver's official neighborhoods. It sits within University Park, and the name covers the blocks around the park, just east of the University of Denver campus. The park fills the stretch between Warren and Iliff Avenues along Fillmore Street.

How the campus and observatory started

In 1886 the University of Denver's backers picked this prairie, well past the city limits, for a new campus. Elizabeth Iliff Warren had made a permanent campus away from downtown the condition of her gift to the university. Potato farmer Rufus Clark donated the land, with terms that included tree planting, a street grid and a ban on making or selling alcohol.

Chamberlin Observatory was the university's first official structure here. Humphrey B. Chamberlin, a real estate promoter and amateur astronomer, pledged $50,000 for it in 1888, and it was done by 1891. Professor Herbert Howe guided the design and had the southern half of the park enlarged, so the road would sit farther away and its traffic wouldn't shake the telescope.

The observatory and the park around it

Robert Roeschlaub designed the building in rusticated red sandstone, Richardsonian Romanesque, with a domed rotunda. The 20-inch refracting telescope inside has a lens by Alvan Clark & Sons and saw first light in 1894. The university still runs it. The Denver Astronomical Society hosts public nights through the year, with tickets sold ahead because seats are limited, and sets up small telescopes on the lawn for free monthly open houses.

The park covers 10.4 acres and has been designated city parkland since 1956. It has four unlit tennis courts (one for drop-in play, three by permit), a softball diamond, a turf multi-use field and a turf area set up for 20 volleyball nets.

Two-story originals and a lot of rebuilding

University Park filled in slowly, so the streets near the park mix eras. The first houses were brick Queen Annes. Foursquares came in the 1890s, bungalows as early as 1900, and revival styles filled open lots after World War I. Early owners tended to build substantial two-story houses near the north end of lots of a quarter acre or more, and a few still have their carriage houses. Professor Howe's 1891 house at 2201 S. Fillmore once had a boardwalk to the observatory. Fitzroy Place at 2160 S. Cook is a Richardsonian Romanesque mansion built for Elizabeth Iliff Warren between 1891 and 1893, now a National Historic Landmark.

Much of the wider neighborhood is one-story tract housing from the 1950s and 1960s plus newer infill, and smaller older houses are often enlarged. If you're shopping here, expect mostly postwar ranches, enlarged houses and new builds. The early houses on big parcels are the exception, and many of them are covered by the district below.

The 2024 historic district

In April 2024, City Council unanimously created the University Park Historic District: 19 structures scattered across the blocks east of campus, with Observatory Park at the center. The observatory, Howe's house and Fitzroy Place are all in it. If you buy one of them, the exterior has to be maintained, and permit work like a roof replacement goes through design review first. Painting or adding storm windows doesn't. Everything else nearby is outside it, so ask early whether a specific address is on the list.

Where to eat and how to get around

On the far side of campus, Jerusalem at 1890 E. Evans sells hummus, falafel and grilled meats until 3 a.m. and was Westword's Best of Denver pick for Middle Eastern food in 2025. Tacos El Metate, at 2060 S. University Blvd., does street-style tacos and is on 5280's 2026 list for the neighborhood.

Streetcars ran here until 1950, and light rail came back in 2006. University of Denver Station, at 1901 E. Buchtel Boulevard, is on RTD's E and T Lines and the 24 bus route, with 540 parking spaces.