Castries, the capital of Saint Lucia, is generally welcoming for travelers and is seen as moderately safe. However, as a solo female traveler, it's important to take certain precautions such as avoiding roaming around alone at night or in remote areas. Stick to well-trafficked tourist areas and always keep your belongings secure as pickpocketing can be a problem. Be cautious and mindful of your surroundings, but don't let fear stop you from experiencing the culture and natural beauty Castries has to offer.