The area comprises about 56 km² (7 km x 8 km). It is located in Central Java, about 15 kilometers north of Surakarta in the Solo River valley. Administratively, Sangiran area is divided between 2 regencies: Sragen (subdistricts of Gemolong, Kalijambe, and Plupuh) and Karanganyar (subdistrict of Gondangrejo). An important feature of the site is the geology of the area. Originally a dome was created millions of years ago through tectonic uplifts. The dome was then eroded exposing beds within the dome which are rich in archeological records.
A modest museum existed at Sangiran for several decades before a modern, well-functioning museum and visitors' centre was opened in December 2011. The new building, a modern museum, contains three main halls with extensive displays and impressive dioramas of the Sangiran area as it was believed to be around 1 million years ago. Several other centres are under construction as well (early 2013) so that by 2014 it is expected that there will be four centres at different places within the overall Sangiran site. The four planned centres are:
- Krikilan: the existing site with the main visitors centre and museum.
- Ngebung: to contain a history of the discovery of the Sangiran site.
- Bukuran: to provide information about the discovery of prehistoric human fossils at Sangiran.
- Dayu: to present information about the latest research.
The current museum and visitors' centre has three main halls. The first hall contains a number of dioramas which provide information about the early humans and animals which existed at the Sangiran site around 1 million years ago. The second hall, which is more extensive, presents much detailed material about the wide variety of fossils found at Sangiran and about the history of exploration at the site. The third hall, in a separate impressive presentation, contains a large diorama which provides a sweeping view of the overall area of Sangiran, with volcanoes such as Mount Lawu in the background and humans and animals in the foreground, as it is imagined to have been around 1 million years ago. Several of the presentations in this third hall draw on the work of the internationally-known paleontological sculptor Elisabeth Daynes.
Access to the Saingiran museum is gained by travelling around 15 km north from Surakarta along the main road towards the central Java town of Purwodadi. The turnoff to the museum, just past the small market town of Kalioso, leads along a sealed road which winds through a relatively poor rural area for around 4 km before reaching the final short entry road to the visitors centre to the right. Total travel time from Surakarta, depending on traffic conditions along the crowded Surakarta-Purwodadi road, is about 45-60 mins. There are frequent buses along the route from Surakarta to Purwodadi which will drop passengers off at the turnoff on request. Local informal motorcycle taxi drivers will ferry visitors along the remaining 4 km for a modest charge. (The museum is open from 8.00am to 4.00pm each day except for Mondays when the museum is closed.)
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