Best natural monuments around Marshallstown include ancient megalithic structures and historical gardens. This region features a landscape shaped by historical sites and natural beauty, often situated near loughs and offering views of the surrounding countryside. Visitors can explore a variety of natural and man-made monuments that reflect the area's rich heritage. The natural monuments here provide insights into past civilizations and local ecosystems.
Last updated: June 30, 2026
Highlight • Monument
Tip by
Highlight • Historical Site
Tip by
Sign up now to discover places like this
Get recommendations on the best single tracks, peaks, & plenty of other exciting outdoor places.
Sign up for free
Highlight • Historical Site
Tip by
Highlight • Historical Site
Tip by
Highlight • Natural Monument
Tip by
Sign up for free to discover even more natural monuments around Marshallstown.
Sign up for free
Already have an account?
Start today with a free account
Your next adventure awaits.
Login or Signup
This impressive stone circle, dating from the late Neolithic to early Bronze Age, consists of over 50 upright stones enclosing a diameter of around 35 metres. Access is via a narrow hedge-lined path that takes you directly to the entrance of the circle
1
0
The historic gardens at Seaforde are situated both within and adjacent to the old walled garden, whose structure dates from the early half of the 18th century. The hidden, micro-climate gardens boast Ireland’s oldest living maze and support a renowned collection of plants, collected from distant corners of the world thanks to the travels of keen plantsman Patrick Forde. The gardens also include an arboretum containing champion trees and rare species. The Tropical Butterfly House is the atmospheric, jungle home to a myriad species of free flying butterflies. All peacefully at home surrounded by exotic and tropical plant life.
0
0
One of the best kept Circles I know of. The late Neolithic to earlier Bronze Age monument was excavated in 1937–1939 but its development and date are still not entirely clear. Excavation uncovered a slab feature with three compartments at the west end of the cairn, which could suggest the court tomb tradition, and a single stone cist at the east end which could point to the passage tomb tradition. Cremated remains representing at least seven individuals and some Neolithic pottery were found. Parallels for the outer stone circle with sites in Cumbria have been suggested.
1
0
The Dolmen can be found on the north east shore of Loughinisland Lake, within sight of Loughinisland Church. A slightly displaced capstone covers a rectangular chamber of which three side stones survive. An early account suggests that this was formerly inside a large circular cairn and approached through a lintelled passage, so it may be the remains of a passage tomb. It is famous as the platform from which Thomas Russell addressed a crowd of United Irishmen in 1803, after the main 1798 rising.
0
0
Situated on the shores of Strangford Lough in an area of outstanding natural beauty, The Park offers peace, beauty and tranquillity. It is home to the Strangford Stone - the tallest megalith in Ireland. This beautiful 200 -acre Country Park offers a great day out for visitors of all ages. Whether you are a keen walker, a nature lover or simply looking for a great day.
1
0
Situated on the shores of Strangford Lough in an area of outstanding natural beauty, The Park offers peace, beauty and tranquillity. It is home to the Strangford Stone - the tallest megalith in Ireland. This beautiful 200 -acre Country Park offers a great day out for visitors of all ages. Whether you are a keen walker, a nature lover or simply looking for a great day.
1
0
Situated on the shores of Strangford Lough in an area of outstanding natural beauty, The Park offers peace, beauty and tranquillity. It is home to the Strangford Stone - the tallest megalith in Ireland. This beautiful 200 -acre Country Park offers a great day out for visitors of all ages. Whether you are a keen walker, a nature lover or simply looking for a great day. Steamers Coffee Shop Serves a wide variety of refreshments, including full breakfast and lunch menus, great coffee and ice cream in the summer.
0
0
Around Marshallstown, the 'natural monuments' primarily refer to significant historical and archaeological sites, often set within natural landscapes. These include ancient megalithic structures like the Strangford Stone and Ballynoe Stone Circle, as well as historical gardens such as Seaforde Gardens and Tropical Butterfly House. While not geological formations in the traditional sense, they offer a blend of human history and natural beauty.
Yes, several sites are great for families. Strangford Stone, located within Delamont Country Park, offers plenty of space for children to explore. Seaforde Gardens and Tropical Butterfly House is also very family-friendly, with its maze and tropical butterfly house providing an engaging experience for all ages. The Ballynoe Stone Circle and Annadorn Dolmen are also suitable for families who enjoy historical exploration.
Both the Ballynoe Stone Circle and Annadorn Dolmen are noted as dog-friendly, allowing you to bring your canine companion along to explore these ancient sites. Always ensure dogs are kept on a leash and any waste is properly disposed of.
The region around Marshallstown offers various outdoor activities. You can find numerous road cycling routes, running trails, and hiking paths. For instance, you can explore routes like the 'Dundrum Coastal Path' for hiking, or the 'Quoile River run' for jogging. For more detailed information and route options, check out the Road Cycling Routes around Marshallstown, Running Trails around Marshallstown, and Hiking around Marshallstown guides.
Yes, beyond the historical 'natural monuments' in this guide, Marshalltown, Iowa, also features traditional natural areas. The **Grimes Farm and Conservation Center** is a notable 160-acre site with tallgrass prairie, native forests, hiking/biking trails, and an observation tower. Other areas include the Linn Creek Recreational Trail, Iowa River's Edge Trail, Riverview Park, and Rhodes Timber Wildlife Area, which are excellent for experiencing local ecosystems, wildlife, and outdoor recreation.
The natural monuments around Marshallstown are rich in history. The Ballynoe Stone Circle dates from the late Neolithic to early Bronze Age, offering a glimpse into prehistoric rituals. The Annadorn Dolmen is an ancient burial site, famously associated with Thomas Russell and the United Irishmen. Even the Seaforde Gardens have a long history, with structures dating back to the 18th century and collections of plants from around the world.
Yes, for Seaforde Gardens and Tropical Butterfly House, parking is available on-site. For other sites like Strangford Stone (within Delamont Country Park), parking facilities are typically provided within the park grounds. It's always advisable to check specific location details for the most up-to-date parking information.
The Strangford Stone is notable for being the tallest megalith in Ireland, standing at 12.5 meters. It's situated on the shores of Strangford Lough within Delamont Country Park, offering superb views over the lough and towards Slieve Croob and the Mountains of Mourne. It was assembled by 1000 people in 1999, making it a modern monument with ancient inspiration.
At Delamont Country Park, where the Strangford Stone is located, you can find Steamers Coffee Shop, which serves a variety of refreshments, including breakfast, lunch, coffee, and ice cream. For other sites, it's best to check local amenities in nearby towns or bring your own provisions.
In the broader natural areas around Marshalltown, particularly at places like Grimes Farm and Conservation Center, you can observe a variety of wildlife. This includes local Iowa wildlife, such as Monarch butterflies during their migration, red-tailed hawks, and turkey vultures. The Linn Creek Recreational Trail and Rhodes Timber Wildlife Area are also good spots for bird watching and observing diverse wildlife habitats.
The best time to visit depends on your interests. For enjoying the gardens and tropical butterflies at Seaforde Gardens, spring and summer offer vibrant blooms and active butterflies. For exploring the megalithic sites like Ballynoe Stone Circle and Strangford Stone, milder weather in spring, summer, or early autumn is generally more comfortable for walking and outdoor exploration.
While not exactly 'hidden,' the Annadorn Dolmen offers a more secluded experience compared to the larger parks. It's found on the north-east shore of Loughinisland Lake and provides a tranquil setting to appreciate ancient history. Its slightly displaced capstone and historical significance make it a unique, less-frequented spot.


Extend your search for the best caves by checking out these guides of the top ones around Marshallstown: