Oerol has grown into one of the largest location theater festivals in Europe, Oerol is programmed at the beginning of the summer, when the island is full of greenery. All of Terschelling forms the location for the Festival, working intensively with one of the partners: Staatsbosbeheer. At Oerol there is room for the experimental and young makers, but there is also room for established groups that premiere at Oerol. Every year some 55,000 visitors come to the Dutch and international theater performances, music, Expeditions, Talks and Pop-up Performance during this temporary society on an island.

The premise of the Festival is to use the entire island as a stage, although two primary stages (Groene Strand and Westerkeyn) are set up. Beaches, woods, dunes and other landscapes can function as performance spaces, and shows have also taken place in farm sheds, boathouses and an army bunker. Tickets are sold in the form of "passports" allowing access to the island for part or all of the week, and then tickets are available for the individual performances.^[1] Street theatre acts, art, and podium musical performances are free during the festival. Over 50,000 people visited the island and some 95,000 tickets were sold for the 2007 festival.^[1]

Due to the COVID-19 pandemic, the physical Festivals of 2020 and 2021 were cancelled. In a short time Oerol developed 'Imagine Your Island', an online environment where visitors could still experience Oerol. Special performances, talk shows and podcasts were produced for this online platform. Radio Oerol was also created and the online Dagkrant (the daily paper) was available for everyone to read. In 2021 the focus was mainly on the 15 makers who worked together during the Oerol Lab, a number of additional residencies and the possibility for groups to finish the performance for future play locations.

In the Terschelling dialect, Oerol means "everywhere" or literally "overall" in the sense of covering the entire land (oeral in standard Frisian). Oerol takes its name from an old Terschelling tradition, when for a short time in early spring cattle were allowed to roam freely on the island, grazing on any and all available greenery.^[2] The oerol tradition continued until the arrival of paved roads, since cars and bicyclists collided at night with sleeping cattle; it was finally ended during the German occupation of the island in World War II.

Over the years, the Festival faced financial difficulties several times. The lowest point was the 1993 edition, when Festival director Mulder announced during the opening that negotiations with the Ministry of WVC and the provincial government of Friesland had failed, and that this time the Festival would be held for the last time. Believing it to be the last time, visitors left the island disappointed. However, a solution was found shortly thereafter.

On the final day of Oerol in 2004 Mulder again announced that the continued existence of the Festival was threatened. Although a record number of visitors (55,000) had come, the organization was once again in financial difficulty. The subsidy of € 180,000 was not enough to continue to organize and finance the festival in the following years. "We want at least € 400,000, otherwise it won't happen next year," Mulder said on the closing day of the 23rd Oerol edition. In 2005, structural support for the festival was actually extended and the 24th edition was secured.

Since 2017, Oerol has a solid position in the system and is part of the Basic Infrastructure (BIS) with a modest structural subsidy. Thanks to the extra subsidies during the COVID-19 pandemic, Oerol was not in financial jeopardy and staff and creators were still able to claim (part of) the agreed fees.

On 10 January 2021, Joop Mulder, the Festival's founder, passed away at the age of 67.

As a tribute to Joop Mulder, Marc van Vliet's artwork De Streken will be placed in the Wadden Sea during the summer in the coming years with the help of private donations. On the other side of the Wadden Sea, Sense of Place has placed a bench, titled: "whatdataangaat". This is a famous quote by Mulder.

•  
  Performance in 2001
•  
  Performance in 2002
•  
  Time Project, a live music installation in 2008

• Official website  

53°22′34″N 5°14′59″E / 53.3761°N 5.2496°E / 53.3761; 5.2496