An important part of adding theme to the sections of a theme park is an entry portal, signifying the transition from one area to the next. These can range from elaborate entries to simple signs, and often frame the scenery beyond the portal.

The entry to Adventure Rivers was simple but effective, with a timber structure spanning the pathway framed by twin waterfalls. The portal was removed with the addition of Skull Mountain though the second waterfall still stands today.

Balin's Jungleland was the section within a section in The Golden Kingdom. The entries to the children's area were located at either end with rustic logs serving as the posts to hold the colorful signs.

The Boardwalk area of the park featured matching signs at each end with a style matching the main buildings of the park's games area. At one point there was a short-lived portal added to the end of the Boardwalk facing the Carousel but the portal proved impractical for vehicle access. Over time the decorative scrolls were removed as they were mangled by guests and the colors faded before the signs were finally removed.

Bugs Bunny Land featured two portals in its time in the park. Originally the area opened with a simple but colorful arch spanning the entrance with illuminated letters. As part of the thematic enhancements under Time Warner's ownership of Six Flags the entry arch was replaced with a giant tree stump with hollowed out archway. Originally a Bugs Bunny figure was poking out of the center of the hollowed archway.

When Bugs Bunny National Park was added in 2006, twin portals were added at both entrances to the section. The simple timber structures reflected the rustic national park style and added to the simple theme elements of the children's area.

When Time Warner owned Six Flags in the 1990's, adding thematic elements to the parks was a major priority, and taking the old Dream Street area of the park and making it a cohesive section was a difficult undertaking. The theme Fantasy Forest was the most effective way of turning the area into a themed section, though it was bisected by the Main Street entrance area. Because of the two sections of the same area, two entry signs were created reflecting their central attractions.  The sign for the half facing Big Wheel reflected the shape of the wheel and the design of the sign on the Big Wheel, while the side facing the Carousel reflected the columns and domes of the Carousel.

Over time both signs were removed, with the Big Wheel side sign removed in the early 2000's and the Carousel side coming out to widen the walkway for the Glow in the Park Parade.

The original western section of the park known as Rootin' Tootin' Rip Roarin' was renamed Frontier Adventures in the 1990's when it was combined with the Hernando's Hideaway area and expanded to what had been a portion of Dream Street in the early years.
New portals were added to create the thematic break between areas. The portal on the former Hernando's side was modified with the sign removed and colorful paint added to the columns and the one spanning the former Dream Street area was rethemed with the addition of the Golden Kingdom area in 2005.
The park's picnic grove was originally known as the Garden of Eatin' and featured a portal surrounding the entrance gates bearing the name for many years. That sign was removed and a new free standing portal was constructed in front of the gates featuring twin stack stone columns spanned by a metal arch with the new name Old Country Picnic Grove. Before the start of the 2011 season the new portal was removed and the picnic grove (now in a gated area) featured no signage at all other than signs on the gate to the area which spanned the fences from the Exploratorium and the former Freefall site.
Perhaps the most elaborate portal in all of the park's history was the Golden Kingdom portal on the Boardwalk side entrance. The impressive tiger carving and stone walls added a sense of age and importance to the area and incorporated the service gates necessary for vehicle access to the park's Security and First Aid buildings.  The massive gates were framed with logs bound in rope to add a jungle/primitive feeling to the entry and really set the tone for the jungle themed section. The former Frontier Adventures portal was given a makeover as a second entrance to the Golden Kingdom with carvings added to the columns and new signage and decorative objects added to complete the look.
As part of the Adventure Rivers area of the park, Koala Canyon was a section within the area just for kids. The entry featured an overhead sign framing the gates all done in simple wooden poles and wooden letters.

As a formerly un-themed area of the park, the area along the lake which had a collection of vaguely nautically themed attractions was unified with the name Lake Front. The theme was enhanced greatly with the crow's nest style signs and pilings bound with rope.  These simple touches combined with the themed music went a long way to create a cohesive theme.  
Looney Tunes Land featured a unique play structure portal that was constructed as part of Shirt Tales Land, the only real change being the illuminated sign on the top. Guests could enter via the cargo nets and slides or under the flanking shade structures.
Added in 1999 as part of the War on Lines, Looney Tunes Seaport was the park's second kids section. The area was built with multiple entrances, the main entrance facing out towards Movietown. The smaller pathways into the area featured smaller, less elaborate signage. When Wiggles World was added, elements of the original portal were moved to the new entrance near Congo Rapids.

The Main Street area of the park has never received any kind of signage or portal, but concept art for a sign was created though never constructed.  This was part of the retheme efforts in the park in the 1990's while Time Warner owned Six Flags.
Movie Town was created in 1993 as a retheme of what had originally been the Fun Fair area of the park. An early concept for the signage was a clap board atop a camera, but this gave way to the more refined arches that spanned the pathways at each end of the section.  One arch was removed when Batman & Robin: The Chiller was built in 1997, but the arch near Studio 28 Arcade still stands and features a plaque about the movie industry's start in New Jersey.

Old Country featured a pair of fairly elaborate signs, with a stylized cuckoo clock design and man in lederhosen blowing an Alpen horn. The sign at the Movietown end was removed when the Chiller was built in 1997, and the sign near the Fountain was removed when the Old Country section was closed in 2008.

In 2006 the Hernando's Hideaway area of the park was remodeled becoming Plaza del Carnavale. At the entry to the area a unique portal was constructed with a terra cotta style column on one side and a taller column with wrought iron sign on the other side. Both columns feature blue accent tile reflecting the coastal theme of the section.
The portal originally constructed for the Wiggles World area of the park were re-themed for the 2011 season becoming the entry to the Safari Kids section of the park. The colorful entries were repainted in different colors and new cartoon style animals were added in place of the original Wiggles characters.

Shirt Tales Land featured a unique play structure portal that was constructed as a remodel and modernization of the existing Kiddie Kingdom area. Guests could enter via the cargo nets and slides or under the flanking shade structures.
In 2006 the Wiggles World section was added to the park, taking over part of the Looney Tunes Seaport.  The colorful makeover featured twin portals of stacked blocks and curved columns with cartoon versions of the Wiggles characters on the boomerang shaped arches. A smaller sign replaced the Seaport sign on one of the smaller pathways.