CREATE TABLE table_203_420 (id DECIMAL, "#" DECIMAL, "stadium" TEXT, "capacity" DECIMAL, "city" TEXT, "home team" TEXT)

which stadium has the largest number of seats ?
SELECT "stadium" FROM table_203_420 ORDER BY "capacity" DESC LIMIT 1
SELECT "stadium" FROM "table_203_420" ORDER BY "capacity" DESC NULLS LAST LIMIT 1