SI Super Intelligence curated directories

SI · Curated travel guide

Slovenia: 10 places worth the journey

Triglav, Škocjan Caves, Postojna Cave and 7 more — what each one is, and why it is worth the detour.

Places
10
World Heritage
1
Language
Slovene
Currency
EUR
Triglav, Slovenia
Triglav · Mountain in northwest Slovenia; highest peak of the Julian Alps · Andrej Jakobčič, CC BY-SA 3.0

What to see in Slovenia

Chosen from everything Wikidata knows about Slovenia and ranked by how many Wikipedia language editions describe them, which is about as close to "famous" as open data gets. One is on UNESCO's World Heritage list.

Triglav

Triglav

Mountain in northwest Slovenia; highest peak of the Julian Alps

Slovenia's highest mountain and the highest peak of the Julian Alps, 2,863.65 metres high. It is the foremost symbol of the Slovene nation and appears on Slovenia's flag and coat of arms.

Photo: Andrej Jakobčič, CC BY-SA 3.0

Škocjan Caves World Heritage

Škocjan Caves

Cave system in Slovenia

A cave system in Slovenia, placed on UNESCO’s list of natural and cultural World Heritage Sites in 1986. It is an important underground phenomenon of the Karst Plateau and of Slovenia, and after Slovenia became independent of Yugoslavia in 1991 the country committed itself to actively protecting the area.

Photo: Lander at Slovenian Wikipedia, CC BY-SA 3.0

Predjama Castle

Predjama Castle

Renaissance castle built within a cave

A Renaissance castle built into the mouth of a cave in south-central Slovenia, in the historic region of Inner Carniola, at Predjama village, approximately 11 kilometres from Postojna town and 9 kilometres from Postojna Cave.

Photo: Mariposa.que.vuela, CC BY-SA 3.0

Ljubljana Castle

Ljubljana Castle

Building in Ljubljana, Slovenia

A castle complex on Castle Hill above central Ljubljana, Slovenia's capital, and a key landmark of the city.

Photo: LjGrad, CC BY-SA 4.0

Planica

Planica

Alpine valley in Slovenia

An Alpine valley in north-western Slovenia running south from Rateče, a border village near Kranjska Gora, another well-known ski resort. Further south it opens into the Tamar Valley, popular with hikers, in Triglav National Park.

Photo: Unknown, CC BY-SA 2.0

Ljudski vrt

Ljudski vrt

Football stadium, home of NK Maribor

A football stadium with 11,709 seats in Maribor, Slovenia's second-biggest city.

Photo: Alen Ištoković, CC BY 3.0

Ljubljana Cathedral

Ljubljana Cathedral

Cathedral in Ljubljana, Slovenia

Officially Saint Nicholas's Church, and also called Saint Nicholas's Cathedral, the Cathedral of Saint Nicholas or simply the Cathedral, a cathedral in Ljubljana, capital of Slovenia, which began as a Gothic church.

Photo: Žiga, Public domain

Bled Castle

Bled Castle

Castle in Slovenia

A medieval castle on a cliff above the town of Bled, Slovenia, looking over Lake Bled. Written sources make it the oldest Slovenian castle, and it is now one of the country's most visited sights.

Photo: Ciaran Roarty, CC BY-SA 2.0

Dragon Bridge (Ljubljana)

Dragon Bridge (Ljubljana)

Bridge in Slovenia

A road bridge over the Ljubljanica River in Ljubljana, Slovenia's capital, between Ressel Street and Kopitar Street, north of the Ljubljana Central Market on Vodnik Square.

Photo: Anonymous Unknown author, Public domain

About Slovenia

Officially the Republic of Slovenia, a Central European country. Its neighbours are Austria (north), Hungary (northeast), Croatia (south and southeast) and Italy (west), and to the southwest it has a 46.6-kilometre (29.0 mi) coast on the Adriatic. Mostly mountains and forest, it covers 20,271 square kilometres (7,827 sq mi).

Officially The Republic of Slovenia. Known locally as Slovenija.

Based on the Wikipedia article, licensed CC BY-SA 4.0: the facts are Wikipedia's, the wording is this site's.

Questions travellers ask

What is worth seeing in Slovenia?

This guide lists 10: Triglav, Škocjan Caves, Postojna Cave and Predjama Castle and others. Škocjan Caves is a UNESCO World Heritage Site.

How were these places chosen?

By machine, from open data, with no human ranking them and nobody able to pay for a place on the list. Everything Wikidata records in Slovenia that is a building, a landform, a protected area or a tourist attraction, has coordinates, a photograph and an English Wikipedia article, is ranked by how many Wikipedia language editions wrote about it. Provinces, cities, airports, stations and stretches of sea shared with the neighbours are filtered out.

Which places here are UNESCO World Heritage Sites?

1 of the 10 in this guide: Škocjan Caves. That is not the full count for Slovenia, only the listed sites that made this guide.

What language is spoken in Slovenia, and what currency?

Slovene. The currency is EUR.

How do I get mobile data in Slovenia?

A travel eSIM is usually the cheapest way, and avoids a roaming bill. The plans suggested at the foot of this guide start at $1.81 for 2GB per day. The eSIM is data-only and sits alongside your normal SIM, so calls, texts and WhatsApp keep working on your own number.

Which networks would my phone use in Slovenia?

Telemach and Mobitel. Your phone picks whichever has the best signal where you are, the same way a local phone does.

One practical note: staying online

Maps, tickets and translation all want data, and roaming is the expensive way to get it. A Computatus eSIM eSIM connects to Telemach and Mobitel once you land, and installs by QR code before you leave.

See 11 Computatus eSIM plans for Slovenia from $1.81
Prices as exported 2026-07-31. Tap a plan to open its order page.
Plan Data Valid Price Order
2GB per day Cheapest 2 GB 1 day $1.81 Get it →
2GB per day 2 GB 1 day $2.15 Get it →
3GB for 15 days 3 GB 15 days $2.69 Get it →
3GB for 30 days 3 GB 30 days $2.86 Get it →
3GB per day 3 GB 1 day $3.04 Get it →
5GB per day 5 GB 1 day $3.67 Get it →

No app needed. Install by QR code before you fly, keep your own number for calls, and it connects the moment you land.

Telemach 5GMobitel 5G

Open the $1.81 plan →

A commission on plans bought through these links is what pays for this guide. Nothing above depends on it: the places are chosen before any price is looked up.