What about Toronto? What signs are most recognizable in the city?
If go anywhere near the intersection of Bloor Street West and Bathurst, you won't be able to miss this sign, reported to have 23,000 lightbulbs. http://www.blogto.com/city/2009/11/honest_eds_is_quirky_kitsch_and_odd_beauty_in_a_toronto_landmark/
The city annually replaces about 1,500 signs with larger, easier-to-read signs. The replaced signs are either old or damaged. Some of the signs went up for auction in 2014. http://news.nationalpost.com/toronto/toronto-street-sign-auction-off-to-a-roaring-start-but-not-everyone-happy-some-will-be-signed-by-celebrity
The iconic spinning Sam the Record Man sign lit up Yonge Street for 47 years before being removed when the building was demolished. There was a lot of controversy over where the sign would go. Recent news say it will be placed high above Yonge Dundas Square. http://news.nationalpost.com/toronto/city-planning-to-pull-iconic-sam-the-record-man-sign-from-storage-and-put-it-above-yonge-dundas-square
Regular TTC subway riders will tell you they recognize their stop by unique variation in the colours of the tiles and station name. These signs were created using the 'Toronto Subway' typeface from the 1950s.
Probably the most recognized sign for Torontonians in 2015. The sign was installed as a temporary feature to welcome athletes and visitors during the Pan Am and Para Pan Am games. The sign received an incredible amount of attention and will be kept in the Square until the end of 2016. http://www.thestar.com/news/gta/2015/09/13/toronto-sign-staying-at-nathan-phillips-square.html