The Huntsville Botanical Garden has been raking in glowing reviews from visitors on TripAdvisor.com - and the travel website has noticed.

Last week, the Garden announced it has received a TripAdvisor Certificate of Excellence award, which recognizes establishments that consistently receive positive reviews on the site.

"There is no greater seal of approval than being recognized by those who have visited the Garden and seen for themselves what a wonderful contribution to our community we represent," said Paula Steigerwald, CEO of the Huntsville Botanical Garden, in a statement.

"With the TripAdvisor Certificate of Excellence based on customer reviews, the accolade is a remarkable vote of confidence to our business and our continued commitment to excellence."

To pick the hotels, restaurants and attractions across the globe that are worthy of the Certificate of Excellence, TripAdvisor uses a proprietary algorithm that takes into account the quality, quantity and "regency" of reviews submitted by visitors on TripAdvisor over a 12 month period. The business's tenure and ranking on the site's Popularity Index is also taken into account.

"By putting a spotlight on businesses that are focused on delivering great service to customers, TripAdvisor not only helps drive increasing hospitality standards around the world, (but) it also gives businesses both large and small the ability to shine and stand out from the competition," said Marc Charron, president of TripAdvisor for Business.

To qualify for the award, a business has to maintain an overall TripAdivsor rating of at least four out of five, as well as have a minimum number of reviews and have been listed on the site for at least 12 months.

Only about 20 percent of this year's winners were attractions.

"Winning the TripAdvisor Certificate of Excellence is a true source of pride for our entire team," said Steigerwald, "and we'd like to thank all of our visitors who took the time to complete a review on TripAdvisor."

The Garden also recently named one of the 10 Best Botanical Gardens for Families.

The U.S. Space & Rocket Center was also awarded a TripAdvisor Certificate of Excellence this year.