Marselisborg Castle, the Danish Royal Family's summer residence, offers free access to its beautiful park and gardens for solo exploration, typically for 1-2 hours. The castle itself is not open for public tours, but visitors can enjoy the serene grounds, featuring rose gardens and sculptures, when the Royal Family is not in residence. It's crucial to check official schedules for seasonal closures, as the park is inaccessible during royal occupancy. Accessibility around the park is generally good, though paths may be uneven in places. When the family is in residence, a daily changing of the guard ceremony at noon is a popular attraction, otherwise, it's a peaceful outdoor experience rather than an interior castle visit.