We noticed that you're using an unsupported browser. The TripAdvisor website may not display properly.
We support the following browsers:
Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.
Want the lowest hotel prices? You're in the right place. We check 200+ sites for you.

Ruby's Diner at the Plaza

Certificate of Excellence
$$ - $$$
American, Diner
Map updates are paused. Zoom in to see updated info.
Reset zoom
Updating Map...
Get directions
160 N Gulph Road, King of Prussia, PA 19406
+1 610-337-7829
07:00 - 21:00
Open now
See all hours
Sun 07:00 - 18:00
Mon - Sat 07:00 - 21:00
More Info
Add Photo Write a Review

126 Reviews from our TripAdvisor Community

Traveller rating
Traveller type
Time of year
  • More
Showing 123: English reviews
Level Contributor
59 reviews
23 restaurant reviews
common_n_restaurant_reviews_1bd8 53 helpful votes
1 of 5 bubbles Reviewed 1 December 2016 via mobile

We were here on the Sunday of Thanksgiving weekend. The restaurant was closed and a few people inside were carrying chairs and tables to the back of the restaurant. The sign was also gone. It certainly gave the impression it was a permanent closure.

2 Thank subrice
Level Contributor
145 reviews
74 restaurant reviews
common_n_restaurant_reviews_1bd8 133 helpful votes
4 of 5 bubbles Reviewed 8 November 2016

We came across this restaurant by chance as we were walking the enormous KOP Mall. Ruby's is side by side w/ a Vietnamese Restaurant. I got a classic cheeseburger that was just the perfect size...tasted great. My vanilla milkshake and French fries were good too. The service was fine and the décor of the place creates a fun atmosphere.

1 Thank SteveSBrickUSA
Mansfield, Pennsylvania
Level Contributor
8 reviews
3 restaurant reviews
4 of 5 bubbles Reviewed 4 October 2016

The food was pretty good. Prices were reasonable. Decor was charming. Nicer and more quiet than sitting in the food court!

Thank thesixs2016
United, Pennsylvania
Level Contributor
5 reviews
3 restaurant reviews
common_n_restaurant_reviews_1bd8 1 helpful vote
5 of 5 bubbles Reviewed 27 September 2016

I took my daughter and her friends to eat there. The food was very good. We loved the train tracks over our heads. The staff was very helpfull

Thank Tammy W
Level Contributor
5 reviews
3 restaurant reviews
common_n_restaurant_reviews_1bd8 1 helpful vote
2 of 5 bubbles Reviewed 25 September 2016 via mobile

I have eaten at this Ruby's many times over the years. The food was always good. However My daughter and I were in for breakfast at 7:15 and two employees got into it in the kitchen. The waitress was screaming at a guy who was getting everything ready for the day. She was yelling "whats wrong with you? Dont you... More 

Thank B G
Level Contributor
11 reviews
9 restaurant reviews
common_n_restaurant_reviews_1bd8 6 helpful votes
2 of 5 bubbles Reviewed 19 September 2016

Rubbery pancakes, sub-par cinnamon roll french toast, dry bacon, tomato juice that had a very distinct "canny" flavor, and a server who was not the warm and fuzzy type - basically threw our food down on the table. The best thing about the restaurant was the decor - several shiny motorcycles and a 50's atmosphere. The restaurant was clean, but... More 

Thank thymeout65
King Prussia, United States
Level Contributor
43 reviews
27 restaurant reviews
common_n_restaurant_reviews_1bd8 8 helpful votes
2 of 5 bubbles Reviewed 18 September 2016

Ordered a turkey club along with my girlfriend. We both got sick off of it only an hour after eating it. Needless to say we won't be going back!

Thank Sean W
Havertown, Pennsylvania
Level Contributor
150 reviews
75 restaurant reviews
common_n_restaurant_reviews_1bd8 55 helpful votes
5 of 5 bubbles Reviewed 11 September 2016

Great place to take the kids. Burgers are the mainstay on the menu. Kids love watching the train run overhead and the motorcycles. Good prices and great service.

Thank Sue K
Phila, Pa
Level Contributor
201 reviews
101 restaurant reviews
common_n_restaurant_reviews_1bd8 95 helpful votes
5 of 5 bubbles Reviewed 6 September 2016 via mobile

Looks like an old time diner . food ok, nothing special. Service average at best. Breakfast fare was very good.

Thank lermndo
Level Contributor
77 reviews
45 restaurant reviews
common_n_restaurant_reviews_1bd8 48 helpful votes
2 of 5 bubbles Reviewed 27 August 2016

Located in the King of Prussia Mall. Was hoping that this diner would be as fabulous as the location in San Diego. The three of us ordered burgers - hard to screw up a burger right? Guess what? The burgers were raw in the middle (ice cold). Our waiter apologized but never offered to remove the inedible burgers from our... More 

1 Thank ScottieLover66

Travellers who viewed Ruby's Diner at the Plaza also viewed

King of Prussia, PA
King of Prussia, PA

Been to Ruby's Diner at the Plaza? Share your experiences!

Write a Review Add Photos & Videos

Is This Your TripAdvisor Listing?

Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more.

Claim Your Listing
Improve this listing

Restaurant Details

Rating summary
  • Food
    4 of 5 bubbles
    4 of 5 bubbles
  • Value
    3.5 of 5 bubbles
    4 of 5 bubbles
American, Diner
Breakfast, Lunch, Dinner, Brunch
Restaurant features
Takeout, Seating, Waitstaff, Parking Available, Highchairs Available, Wheelchair Accessible
Good for
Child-friendly, Kids, Cheap Eats
Open Hours
07:00 - 18:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
Location and Contact Information
  • Address: 160 N Gulph Road, King of Prussia, PA 19406
  • Location: United States  >  Pennsylvania (PA)  >  King of Prussia
  • Phone Number: +1 610-337-7829

Questions & Answers

Here's what previous visitors have asked, with answers from representatives of Ruby's Diner at the Plaza and other visitors
2 questions
Ask a question
West Chester, Pennsylvania
1 month ago
Cherry Hill, New Jersey
11 months ago

See all questions (2)

Questions? Get answers from Ruby's Diner at the Plaza staff and past visitors.
Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?