Today I went on a brief tour of Sert buildings in Cambridge, mostly on the Harvard campus in Cambridge, MA. Josep Lluís Sert, an influential architect from Catalonia, Spain, was the Dean of the Harvard Graduate School of Design, succeeding Walter Gropius. Sert's close friends include prominent contemporary artists such as Joan Miró and Marc Chagall, and he mentored notable architects such as Fumihiko Maki (designed the new Media Lab Extension at MIT in Cambridge).
Here's a map of the buildings featured in this post and suggested tour route:
https://drive.google.com/open?id=1Ez459ck0ipouTBQaO2yfI8DyNGMGJqqA
Duration: dependent on your interest level. I'd recommend allocating about 1.5 - 2 hours for making casual observations and slow walking pace.

Warning: Harvard has many other historic/significant buildings, so either avoid getting distracted or allocate extra time.
1. Josep Lluís Sert Residence
Completed: 1957
The first work of this tour is the residence designed and previously occupied by Sert when he was at Harvard. I didn't take pictures since this is a private residence, currently occupied by a personal friend of Sert and an eminent professor at Harvard.
2. Center for the Study of World Religions
Address: 42 Francis Ave, Cambridge, MA
Completed: 1960
Located right across the street from the Harvard Divinity School. Though not continuous, horizontal windows and door with glass openings span the entire lower part of the building.
3. Harvard Science Center
Address: 1 Oxford St, Cambridge, MA
Completed: 1972
4. Carpenter Center for the Visual Arts
Address:
Completed: 1963
Architect: Le Corbusier
Though it is not a building designed by Sert, this is the only building in North America designed by the famous Le Corbusier, who was a mentor of Sert. The building is located right next to the Harvard Art Museum. It is a notable case incorporating Le Corbusier's Five Points of Architecture.
4. Smith Campus Center (formerly known as Holyoke Center)
Address: 30 Dunster St, Cambridge, MA
Completed: 1966
The red stripe on this bank's window fits well with the building's colored stripes on the windows. Though it would be nicer if the stripe were not continuously running through multiple windows.
5. Peabody Terrace
Address: 900 Memorial Dr, Cambridge, MA
Completed: 1965
It is a complex of graduate student housings located on the bank of the Charles River. Apparently, it was designed to "bring the color and life of the Mediterranean to the white cubist architecture of northern Europe."
You might have a better vantage point on the other side of the river.