Symbols painted anywhere using invisible paint detectable only by Detective Mode. Scan them after discovering to get some exp. The locations are indicated below:
* Southern Royal Hotel at the Diamond District. Located on the southeastern wall of the Hotel. Go up to the top of the central news building and then hop down to a ledge below.
* Northern Diamond District, on a building across the Comms Tower. This is the Gotham City Daily building, go down the stairs to find the tag.
* Wall of the Central News Building at the northwestern area of Diamond District. Climb up the building, hop down to the ledge below. Destroy the wall and find the tag
* Southwestern area of Sheldon Park, by a wall above the waters. This is situated on the balcony of the lower wall of the Wonder Tower.
* Northwestern Bowery, by a wall at the ground. Placed at the northern side of the Carmine Hotel.
* Southwestern Park Row, by a small alley in the middle of two buildings. This one is at the Ace Chemical building, just look at the lower part of the walls to find it.
* Roof of a building in southeastern Park Row. Find it at the southern wall of the Monarch Theater's roof, just climb over the structure.
* Northern wall of a building atop of the Diamond District. This tag is situated on the right angled wall at the Gotham City Cinema.
* Western area of the Diamond District, at street level, by a small wall on a doorway. Located on the walls of the Soder Cola building.
* Wall of a building under the word "Coventry" in the map. This is situated on the northwestern area. It is quite easy to locate since the word is specified highly on the map.
* Wall of a building, top-left area of Coventry. This is actually on one of the walls of the Cale-Anderson Pharmaceutical building, down on a barricaded area in the alley.
* At the edge, front of a huge pipe. Located at the Coventry, climb up the Lacey Towers until you get to the gargoyle. Glide downward to the pipes and get the tag.
* Southern central Coventry, above a transport truck. Situated at the walls of the Cale-Anderson Pharmaceutical building, below the truck on the alley.
* South-central Coventry, building having gargoyle statues, above a pipe walkway. Go up above the Lacey Towers until you reach the gargoyle. just glide down to the pipes, and search them.
* Northern Burnley, on the wall between two buildings. At the north end of Hamilton Hill, in a smaller area in between the two buildings where you can hop down.
* Top of the Gotham Bank in the south Bowery, on a slanted roof. At the central roof of the Gotham City Merchant’s Bank, located close a metal fence.
* Northeastern building in Sheldon Park, on a small balcony. At the balcony of the lower wall of the Wonder Tower. Head down there to grab the item.
* Wall behind a fence on northern Industrial District. Hop over to the fence on the west of the steel mill to retrieve the item.
* On a wall under the second letter "D" of the Diamond District word in the map. Check the walls of the Soder Cola building to find and get it.
* Bottom left corner of the GCPD at Lower Burnley. Head to the ledge on the southwestern side of the GCPD to locate it.