Use 'by there' to point out places next to visual landmarks to help someone find them easily. If you see the big red sculpture, the entrance is just by there.
Pro Tip 2/3
Informal Directions
'By there' is often used in casual conversation to give loose directions or locations. Drop the package off by there, where you see the bikes.
Pro Tip 3/3
Spatial Context
Combine 'by there' with gestures or pointing to clarify the specific place you mean. Park your car by there – yes, right by that tree.