This Ontario park has over 50 sapphire lakes and a swimming hole that feels like the Caribbean

Ontario is filled with beautiful parks to explore this summer, but some destinations take the scenery to another level.

If you're dreaming of crystal-clear water, rugged mountains, and hidden swimming holes, there's one spot worth adding to your list.

Killarney Provincial Park is a breathtaking destination on the northern shore of Georgian Bay, known for its white quartzite peaks, pink granite landscapes and more than 50 "exceptionally clear, sapphire lakes."

It's even been dubbed the "crown jewel" of the Ontario parks.

The park is a favourite among artists and nature enthusiasts, with its dramatic scenery famously inspiring members of the Group of Seven.

It offers endless adventures to enjoy, from hiking and canoeing to camping, swimming and more.

If you're looking for a dreamy spot to take a dip, Topaz Lake is one place to check out.

The swimming hole is tucked into the park's rugged landscape and is known for its striking turquoise-blue water and mountain views.

According to Ontario Parks, the glacial lake features "sapphire blue water" that "feels as if you're in the Caribbean."

The tropical-looking water is especially striking against the surrounding white quartzite cliffs and forest, giving the swimming hole a northern-Ontario backdrop despite its Caribbean-like colour.

Keep in mind that getting to Topaz Lake isn't exactly a quick roadside stop. The swimming hole is tucked into Killarney's backcountry, so you'll need to hike to reach it, which can take 7 to 8 hours return.

Topaz Lake is just one of more than 50 sapphire lakes scattered throughout the park. Ontario Parks says the backcountry is home to 183 campsites situated across these lakes, with canoe routes that can be explored on day trips or extended adventures.

You can paddle through the network of clear lakes, surrounded by the La Cloche Mountains, or plan a multi-day canoe trip and spend the night at a backcountry campsite beneath the stars.

If you'd rather stay on land, there are lots of hiking options to choose from.

The Crack is one of the park's most famous hikes. The 6-kilometre, challenging trail takes around four hours and climbs to Killarney Ridge, where Ontario Parks says the view is "absolutely stunning." From the top, you'll get panoramic views of the surrounding landscape and the immense white cliffs of the La Cloche Mountains.

For something a little less intense, the 4-kilometre Cranberry Bog Trail offers a more moderate adventure through wetlands, forests and rocky terrain. The trail passes through some of the "park's loveliest scenery," according to Ontario Parks.

Killarney is worth sticking around after sunset, too. The park is designated as a Dark Sky Preserve, making it a beautiful place to look for stars, planets, constellations, meteor showers and even the Northern Lights when conditions are right.

With endless shimmering lakes, rugged white mountains and a swimming hole that will transport you to another world, Killarney is a dreamy summer escape without leaving Ontario.

Before you get going, check out our Responsible Travel Guide so you can be informed, be safe, be smart, and most of all, be respectful on your adventure.