To help celebrate Expo Chicago, the huge contemporary art fair happening on Navy Pier this weekend, The Golden Triangle (330 N. Clark, 312-755-1266) is hosting an Open House Friday from 4 p.m. to 6 p.m. and Saturday from noon to 5 p.m. The latest collection is definitely worth browsing. Some highlights: a panel made of small round mirrors that came from a hotel in the South of France and French soda spray bottles from the 1950s, shown here. Also, check out the pop-up apartment interior designer Michael Richman designed at the Trump Tower in honor of Expo Chicago, Sunday, 10 a.m. to noon. Call 312-644-0900 to make reservations.