When we left off on Round Four of Arch Madness last week, it was plausible that the championship would pit two Perkins + Will projects against each other. Coming from a powerhouse firm that's adept at marrying commercial projects with the natural environment, it seemed like our readers would easily go for the two projects designed by Ralph Johnson. Yet only one made it through, proving ARCHITECT’s readers love for residential design is unwavering.

Perkins + Will’s Shanghai Natural History Museum has won every round by a landslide, and by a larger share each succeeding round. In the Sweet Sixteen, there was a 20 percent difference in votes against Diller Scofidio + Renfro’s project at Columbia University. In the Elite Eight, we saw a 34 percent difference against Bohlin Cywinski Jackson’s single family site in Colorado, Independence Pass Residence. And for the most recent round, against the Colorado Outward Bound Micro Cabins, the spiraling site shut out the series of petite cabins by a whopping 46 percent. With a record like that, it's easy to assume that the Shanghai Natural History Museum will take it all in the Championship Round—unless the determination of its competitor, Rappahannock House, ultimately wins in an upset, as it did in the Final Four.

Coming out over Perkins + Will’s collaborative project with WDG Architecture, the United States Coast Guard’s headquarters, the Rappahannock House, designed by Gensler’s Jordan Goldstein, shows a love for residential design can endure even the most difficult matches. When we were going into the weekend, it looked as if Perkins + Will’s site would grab the “double U,” but near the end of the weekend the Rappahonnack House gained speed. By the end of it, David ended up beating Goliath, a 3,200-square-foot house against a 1.2-million-square-foot site, and shook up our expectations for what we thought would be the final Championship Game.

Voting for this round will close on Wednesday, April 5, at midnight, EST.

Linear Cabin

Hog Pen Creek Residence

H3 House

Case Inlet Retreat

See Through House

US Coast Guard Headquarters

The Wave House

Open House with Condensed Core

Newberg Residence

House XL

KODA House

Grow Box

Shelton Marshall Residence

L4 House

Rappahannock House

Kent State

Hog Pen Creek Residence

Case Inlet Retreat

US Coast Guard Headquarters

Open House with Condensed Core

Newberg Residence

Grow Box

Shelton Marshall Residence

Rappahannock House

Case Inlet Retreat

US Coast Guard Headquarters

Newberg Residence

Rappahannock House

US Coast Gaurd Headquarters

Rappahannock House

Rappahannock House

Shanghai Natural History Museum

Colorado - Micro Cabins

Shanghai Natural History Museum

Colorado - Micro Cabins

Stealth Building

Shanghai Natural History Museum

Independence Pass Residence

Enough House

Colorado - Micro Cabins

Island Residence

Stealth Building

Columbia University

Shanghai Natural History Museum

CCR1

Independence Pass Residence

White Walls

Enough House

Shokan House

Colorado - Micro Cabins

Bait Ur Rouf Mosque

Island Residence

Pivot Apartment

Stealth Building

Columbia University

ME:OU

Xixi Wetland Estate

Shanghai Natural History Museum

CCR1 Residence

Fenlon House

Gordon Parks Arts Hall

Independence Pass Residence