The Philippines’ most famous resort island Boracay re-opens Friday after a six-month clean-up intended to fix the damage done by unrestrained mass tourism.

Here are some other global hotspots that authorities have moved to protect:

Bali, Indonesia

A tourist stands between plastic rubbish at Kuta beach near Denpasar, on Indonesia’s tourist island of Bali on December 19, 2017. The palm-fringed shoreline of BaliÂ’s Kuta beach has long been a favourite with tourists seeking sun and surf, but nowadays its golden shores are being lost under a mountain of garbage. Photo: AFP

Officials on the holiday island, Indonesia’s top tourist destination, declared a “garbage emergency” last year after the palm-fringed Kuta beach was swallowed up by mountains of trash.

Indonesia, second only to China as the world’s biggest contributor to marine debris, deployed 700 cleaners and 35 trucks to remove roughly 100 tonnes of debris each day from Kuta and two other popular beaches to a nearby landfill.

Easter Island, Chile

View of Moais — stone statues of the Rapa Nui culture — on the Ahu Tongariki site on Easter Island, 3700 km off the Chilean coast in the Pacific Ocean. Photo: Arian Zwegers/Flickr

Known for its 900-odd human figures standing up to 10 metres (32 feet) tall, the isolated Pacific island severely curtailed visitor numbers in August this year due to concerns over the remote Chilean territory’s environmental sustainability.

Tourist stays on the island, believed to have been settled by the Rapa Nui people around the 12th century, were cut to 30 days from 90, after the population — along with the crime rate — doubled in a few decades.

Those who wish to live on the island are now required to be a parent, partner or child of the Rapa Nui people.

Dubrovnik, Croatia

View of the walled Old Town (L) of Dubrovnik in Croatia, taken on September 1, 2018. Photo: Yuri Cortez/AFP

Dubrovnik, which boasts an old walled city, saw cruise ship arrivals shoot through the roof after it was used as a backdrop in the smash television drama series “Game of Thrones”, causing congestion as tourists made a beeline for the shoot locales.

Mayor Mato Frankovic told AFP the authorities plan to cut cruise ship numbers coming into the Adriatic port, while deploying cameras to count the number of people entering the old town.

Venice and Florence, Italy

Venice’s citizens and tourists pass through turnstiles, limiting the massive flows of tourists in the main streets of in Venice, on May 1, 2018. Venice’s mayor Luigi Brugnaro introduced these turnstiles gates, at Piazzale Roma, outside the train station, and others crucial points of the city, as an attempt to manage the crowd, increase safety and free up the cityÂ’s most clogged thoroughfares. Photo: Andrea Pattaro/AFP

Venice authorities are trialling a system that forces visitors to make a reservation if they want to go to the popular Saint Mark’s Square during peak hours.

They are also fining tourists 500 euros ($585) for bathing or having picnics in the city’s famous canals.

In Florence, officials have resorted to hosing down public spots such as church steps where many visitors congregate to eat picnics. This aims to prevent people from sitting on the wet pavement.

Machu Picchu, Peru

Machu Picchu. Photo: CC0

Peruvian authorities increased surveillance at the 15th-century Incan citadel high in the Andes mountain range in 2014 as nude photos and streaking became increasingly common.

Tourists have since at least 2013 been posting their naked selfies on social media, which the government described as a “disrespectful act” aimed solely at getting attention.

Maya Bay, Thailand

This photo taken on April 9, 2018 shows a crowd of tourists on the Maya Bay beach, on the southern Thai island of Koh Phi Phi. Across the region, Southeast Asia’s once-pristine beaches are reeling from decades of unchecked tourism as governments scramble to confront trash-filled waters and environmental degradation without puncturing a key economic driver. Photo: AFP

The glittering Thai bay immortalised in the movie “The Beach” was closed indefinitely on October 1 to allow it to recover from the impact of mass tourism, after a four-month respite failed to ease beach erosion and pollution.

About 5,000 tourists had arrived by boat each day to the beach framed by limestone cliffs that was made famous by the 2000 film starring Leonardo DiCaprio.